Choices:
- mass of the soil.
- water in the soil.
- composition of the soil.
- vegetation growing in the soil.

Question: Question: The texture of soil depends primarily on the


Choices:
- decreases
- decreases
- increases
- remains the same

Question: Question: As children grow, their body height usually


Choices:
- inertia
- gravity
- magnetism
- solar energy

Question: Question: Which is a force that keeps the planets in orbit around the Sun?


Choices:
- to digest food
- to remove toxins
- to produce bile
- to oxygenate blood

Question: Question: What is the role of the kidneys in the excretory system?


Choices:
- 200 thousand
- 200 million
- 200 billion
- 200 trillion

Question: Question: Which number is closest to the estimated number of stars in the Milky Way galaxy?


Choices:
- The mountain range will become faulted.
- The mountain range will be lifted up.
- The mountain range will form craters.
- The mountain range will become rounded.

Question: Question: Which statement best describes how a mountain range changes over time from wind and water erosion?


Choices:
- a ribosome
- the endoplasmic reticulum
- the Golgi apparatus
- a vacuole

Question: Question: In a cell, a newly synthesized protein requires modification by the addition of a carbohydrate. Which structure will transport the protein from the site of synthesis to the site of modification?


Choices:
- an observation
- a conclusion
- a prediction
- an inference

Question: Question: Students notice that in the fall leaves of sugar maple trees turn red, but the leaves of black oak trees turn brown. The students are making


Choices:
- psychrometer
- thermometer
- anemometer
- barometer

Question: Question: What instrument should be used to monitor atmospheric pressure changes as a weather system approaches?


Choices:
- number of phosphates
- amount of thymine
- sequence of nucleotides
- type of bond between bases

Question: Question: Which of the following is responsible for determining the traits of an organism?


Choices:
- moth
- grass
- snake
- hawk

Question: Question: In which organism can cell walls be found?


Choices:
- motion.
- weather.
- body systems.
- the history of Earth.

Question: Question: Isaac Newton is best known for his study of


Choices:
- an iron nail
- an ice cube
- a plastic knife
- a wooden ruler

Question: Question: Some objects are attracted by magnets. Which object is attracted by a magnet?


Choices:
- reducing the amount of heartburn with the use of herbal teas
- answering mathematical equations with the use of computers
- bringing down body temperature with the use of a hand fan
- increasing the supply of fish with the use of fish farms

Question: Question: Which action represents the use of technology to solve a problem?


Choices:
- heat.
- electricity.
- vibrations.
- light.

Question: Question: When a guitar string is strummed, it produces sound by making


Choices:
- visiting the Moon
- a stone eroding in a river
- living on the space station
- a ship floating on the ocean

Question: Question: The meanings of mass and weight can often be confused. Which is an example of a change in both mass and weight?


Choices:
- dust, gas, ice
- small, medium, large
- spiral, elliptical, irregular
- red giant, white dwarf, supernova

Question: Question: Which of these are scientific classifications for galaxies in the universe?


Choices:
- amoeba
- euglena
- paramecium
- volvox

Question: Question: A scientist was observing a unicellular organism over a period of time. He noticed that vacuoles kept moving to the same place in the plasma membrane to empty their contents outside the cell. Which organism was he observing?


Choices:
- hail
- rain
- sleet
- snow

Question: Question: Which form of precipitation is most likely to cause damage when hitting the roof of a car?


Choices:
- balance
- compass
- microscope
- thermometer

Question: Question: Which tool is best to use when comparing an animal cell to a plant cell?


Choices:
- the solute.
- undergoing chemical change.
- the solvent.
- changing from a solid to a gas.

Question: Question: The density of 200 mL of water was determined, and then 20 grams of sugar was dissolved in the water. The student determined the density of the sugar-water solution and recorded the collected data in a table. The sugar in this investigation is


Choices:
- the rotation of Earth
- the tilted axis of Earth
- the flattening of Earth at the poles
- the elliptical shape of the orbit of Earth

Question: Question: During the year, the angle at which the path of the Sun appears in the sky varies. In the Northern Hemisphere, the path of the Sun appears higher on the horizon during the summer and lower on the horizon during the winter. Which factor most contributes to the variation in the path of the Sun across the sky?


Choices:
- bar graph
- line graph
- pie chart
- scatterplot

Question: Question: Which is the best way to show the percent gas composition in Earth's atmosphere?


Choices:
- AgNa
- ClNO_{3}
- Na_{3}NO
- AgCl

Question: Question: For the reaction between silver nitrate and sodium chloride, which of the following would be a product? AgNo_{3} + NaCl ->


Choices:
- satellites
- airplanes
- barometers
- maps

Question: Question: Which invention has done the most to help predict weather and warn people of approaching storms?


Choices:
- return to their summer feeding area.
- hibernate until the snows have stopped.
- hunt for organisms such as small rodents.
- move to other areas to compete for resources.

Question: Question: During the Siberian summer, reindeer graze on young roots, fungi, grass, and other vegetation. In the cold winter months, they migrate south and rely on available, but less nutritious food, such as lichen. Increased snowfall during the entire winter in southern areas would result in reindeer having to


Choices:
- centripetal force
- generalized force
- centrifugal force
- gravitational force

Question: Question: Sir Isaac Newton stated that every object in the universe attracts matter. The attraction depends on the mass of an object and the distance between the objects. What type of force did Newton describe?


Choices:
- spring
- summer
- autumn
- winter

Question: Question: What season is the Northern Hemisphere experiencing when it is tilted away from the Sun?


Choices:
- The molecules spread apart and move more slowly.
- The molecules spread apart and move more quickly.
- The molecules come together and move more slowly.
- The molecules come together and move more quickly.

Question: Question: Heat is applied to a beaker of water, raising the water temperature a few degrees. What happens to the water molecules after heat is applied?


Choices:
- a sand dune
- a volcano
- a canyon
- a glacier

Question: Question: Which feature is most likely the result of a flowing river?


Choices:
- spleen
- liver
- lungs
- pancreas

Question: Question: Which organ is the site of gas exchange between the body and the environment?


Choices:
- The nucleus is the least dense region of an atom.
- Electrons are located far from the nuclei of their atoms.
- Most of the volume of atoms is filled with the particles they contain.
- The repulsion of protons and neutrons keeps them on opposite ends of atoms.

Question: Question: A positively-charged hydrogen ion has a much smaller radius than a neutral hydrogen atom. Which best explains this difference?


Choices:
- metabolic rate and body temperature both increase
- metabolic rate and body temperature both decrease
- metabolic rate increases and body temperature decreases
- metabolic rate decreases and body temperature increases

Question: Question: How are dormancy and hibernation similar in animals?


Choices:
- density of water
- displaced volume
- gravitational pull on Earth
- density of the aluminum cube

Question: Question: A small aluminum cube is dropped into a beaker of water to determine the buoyancy. Which of these is not necessary in determining the buoyant force acting on the cube?


Choices:
- become strong as it cures.
- withstand compression.
- remain pliable after hardening.
- be molded into almost any shape.

Question: Question: Before concrete has hardened, it exhibits plasticity. This is an advantage because it allows the concrete to


Choices:
- a dog sitting on command
- a parrot repeating a phrase
- a bird flying south for the winter
- a horse competing in a horse show

Question: Question: Which event is an example of inherited behavior?


Choices:
- The leaves provide shelter to growing seeds.
- The decay of the leaves provides nutrients to other plants.
- The leaves release chlorophyll into the grass as they decay.
- The leaves prevent fungus from growing at the base of the tree.

Question: Question: A student must explain the role of dead leaves in the ecosystem. Which statement will the student most likely provide to explain the importance of these leaves?


Choices:
- They use energy from the sun to make food.
- They absorb energy from a host animal.
- They get energy from eating living animals.
- They get energy by breaking down dead plants and animals.

Question: Question: Which of the following statements is true about organisms that are producers?


Choices:
- Annual rainfall would increase.
- Daylight hours would decrease.
- Seasons would be shorter.
- Annual temperature variation would be greater.

Question: Question: If Earth revolved at a faster rate, what would most likely occur?


Choices:
- hundreds
- thousands
- millions
- billions

Question: Question: The distance from Earth to the Sun is one astronomical unit. Which unit best describes how many astronomical units it is from Earth to the far end of the Milky Way Galaxy?


Choices:
- habitat loss
- behavioral changes
- increased reproduction rate
- altered migration patterns

Question: Question: Which is most likely to cause an organism to become endangered or extinct?


Choices:
- cool and dry
- warm and dry
- cool and humid
- warm and humid

Question: Question: What are the characteristics of maritime polar air masses?


Choices:
- field mouse, grass, hawk snake
- snake, field mouse, hawk, grass
- grass, field mouse, snake, hawk
- snake, grass, field mouse, hawk

Question: Question: In an ecosystem, which list of organisms is in the correct order from producer to top-level consumer?


Choices:
- All foods are solid.
- All foods taste good.
- All foods provide nutrients.
- All foods should be cooked.

Question: Question: What is a true statement about all foods?


Choices:
- bleach
- vinegar
- sugar water
- salt water

Question: Question: Which of the following is an example of an acidic solution?


Choices:
- molten rocks.
- igneous rocks.
- sedimentary rocks.
- metamorphic rocks.

Question: Question: When rock particles settle at the bottom of the ocean, they can continue to be buried by other particles. The process of cementation of these particles forms


Choices:
- a folded chain of amino acids
- a folded chain of carbohydrates
- a branched chain of fatty acids
- a branched chain of nucleic acids

Question: Question: Which of these is part of the description of protein?


Choices:
- consumers
- decomposers
- predators
- producers

Question: Question: Lightning from a thunderstorm strikes a 21 tree that falls to the forest floor and dies. During the next few years the dead tree undergoes many changes. What organisms are most likely responsible for the biological and chemical changes to the tree?


Choices:
- mixture
- element
- solution
- compound

Question: Question: Sodium chloride is formed when sodium and chlorine chemically combine. Which term best describes sodium chloride?


Choices:
- soil, water, and food
- soil, light, and water
- air, food, and water
- air, water, and light

Question: Question: Which three things do animals need from their environment in order to survive?


Choices:
- coal and natural gas
- natural gas and nuclear energy
- nuclear energy and hydropower
- hydropower and coal

Question: Question: Most electricity in the United States is generated using coal, natural gas, nuclear energy, or hydropower. Which of these add carbon dioxide to the atmosphere?


Choices:
- mean rainfall
- rainfall mode
- median rainfall
- percentage of rainfall

Question: Question: A student has recorded rainfall amounts for 28 days and uses a calculator to determine the total rainfall. What does the student calculate when she divides the total rainfall by 28?


Choices:
- habitat destruction
- volcanic eruptions
- increased salinity
- tidal waves

Question: Question: Which of the following was most likely the cause of the extinction of 60-100 species of native birds in Hawaii since the arrival of colonists?


Choices:
- larva; pupa; egg; adult
- egg; pupa; larva; adult
- adult; larva; pupa; egg
- egg; larva; pupa; adult

Question: Question: Which is the correct sequence for the stages in the life cycle of a butterfly?


Choices:
- Wood
- Seawater
- Sunlight
- Coal

Question: Question: Oil is an example of a natural resource that is not renewable. Which is another example of an nonrenewable resource?


Choices:
- magnify the work.
- keep hair out of their faces.
- protect their eyes from debris.
- prevent glare from the light.

Question: Question: Students are using hammers to break apart rocks as part of an investigation. The students MUST wear goggles to


Choices:
- The Sun would appear larger and brighter.
- The Sun would appear smaller and brighter.
- The Sun would appear larger and dimmer.
- The Sun would appear smaller and dimmer.

Question: Question: How would the Sun appear to an astronaut on Pluto compared with how it looks from Earth?


Choices:
- observe live organisms.
- show the interior of sliced objects.
- highlight objects with chemical dyes.
- remove debris that is obscuring the object.

Question: Question: When using a microscope, it is best to use a wet mount to


Choices:
- wind
- sunlight
- fossil fuel
- tidal waves

Question: Question: A power plant uses chemical energy to produce electricity. What source of energy does the power plant most likely use?


Choices:
- proton
- neutron
- electron
- quark

Question: Question: Which subatomic particle has a negative charge?


Choices:
- stomach, esophagus, large intestine, small intestine.
- small intestine, large intestine, esophagus, stomach.
- esophagus, stomach, large intestine, small intestine.
- esophagus, stomach, small intestine, large intestine.

Question: Question: Which list gives the correct order of food traveling through the digestive system after it is swallowed?


Choices:
- speciation
- adaptation
- natural selection
- genetic mutation

Question: Question: Parakeets are birds whose basic plumage color is green. However, parakeets exhibit a wide range of color both in the wild and in captivity. Which process is the source of the wide color variation observed in parakeet populations?


Choices:
- using coal to generate electricity
- discovering a new species of snake
- developing an antibiotic to treat infections
- changing the definition of the term planet

Question: Question: In science, old ideas can be changed when new discoveries alter existing information. Which situation is most likely an example of a rethinking of an existing idea?


Choices:
- Sweat stops sunburn.
- Sweat cools the body.
- Sweat feeds the skin.
- Sweat heals cuts.

Question: Question: How does sweat on the skin help the body?


Choices:
- Energy from the Sun evaporates water.
- Energy from the Sun condenses water.
- Energy from the Sun precipitates water.
- Energy from the Sun collects water.

Question: Question: How does the Sun power the water cycle?


Choices:
- eat foods high in fat
- exercise regularly
- drink alcohol often
- smoke tobacco occasionally

Question: Question: In order to maintain good health, humans should


Choices:
- dragonfly
- trout
- water
- frog

Question: Question: Which of the following is an abiotic factor in a river ecosystem?


Choices:
- propose different conclusions from the same data
- study the data to evaluate the conclusion
- change current models to fit the conclusion
- develop new technologies based on the conclusion

Question: Question: When a conclusion is reached after an experiment, which is most likely the first step other scientists might take when checking the conclusion?


Choices:
- genetic mutation
- species competition
- asexual reproduction
- genetic variation

Question: Question: What allows for some organisms in a population to have an increased survival rate over other organisms of the same species?


Choices:
- wetland
- rainforest
- tundra
- desert

Question: Question: Which environment is best for an organism that sleeps during the day and digs holes in the ground for shelter?


Choices:
- abbreviations for each element.
- the number of atoms per element.
- what elements are in each molecule.
- the chemical reaction that takes place.

Question: Question: One difference between a chemical formula and a chemical equation is that the chemical equation shows


Choices:
- pine forest.
- grassland.
- desert.
- rainforest.

Question: Question: Plants that have stems that store water and no leaves would most likely live in a


Choices:
- produce pollution
- are no longer used by humans
- often contain microscopic animals
- take millions of years to form

Question: Question: Fossil fuels are considered nonrenewable because they


Choices:
- egg
- larva
- pupa
- adult

Question: Question: A baby bird must eat a lot of food to grow. During which stage of its life cycle is a butterfly most similar to a baby bird?


Choices:
- a fault
- a ridge
- a trench
- a rift zone

Question: Question: Which feature results when plates of different densities converge and one plate slips under the other?


Choices:
- Plants forming new buds
- Sun shining on flowers
- Grass being wet in the morning
- Leaves changing color on trees

Question: Question: Which of these is the BEST sign that the fall season has begun?


Choices:
- The body's immune system attacks specific tissues.
- The cells of the immune system begin to grow rapidly.
- The body's immune system fails to fight off infections.
- The cells of the immune system are absorbed by antigens.

Question: Question: Rheumatoid arthritis is an autoimmune disease that affects the joints. Which of these events causes the symptoms of this disease?


Choices:
- comparing data
- asking a question
- making a prediction
- forming a conclusion

Question: Question: Chris stirs a cup of hot chocolate. He uses a wooden stick thinking it will stay cooler than a metal spoon. Which activity best describes the student's action?


Choices:
- a moon
- a cell
- a light ray
- a molecule

Question: Question: Which would be best seen through a telescope?


Choices:
- a face mask
- plastic gloves
- a ventilator hood
- insulated gloves

Question: Question: A student conducts an investigation testing a material's effectiveness as a heat insulator. Which tool will help the student conduct this investigation safely?


Choices:
- meter stick, microscope, and test tubes
- test tube, hot plate, and safety goggles
- balance, telescope, and graduated cylinder
- Petri dish, dissecting equipment, and spring scale

Question: Question: Which equipment would best be used for an activity on a biochemistry unit?


Choices:
- chemical to thermal.
- potential to nuclear.
- thermal to potential.
- electrical to kinetic.

Question: Question: When the fuel in a gasoline engine is burned, the energy conversion is from


Choices:
- Fungi.
- Plantae.
- Archaea.
- Protista.

Question: Question: Some prokaryotes once classified in the domain Bacteria are now classified as


Choices:
- soil
- sunlight
- producer
- consumer

Question: Question: Which of these is the primary source of energy in food webs?


Choices:
- glaciers carried the fossils up the mountains
- the Rocky Mountains and the Swiss Alps are both volcanic in origin
- clams once lived in mountains, but have since evolved into sea-dwelling creatures
- the layers of rocks in which the fossils were found are from the same geologic age

Question: Question: An unusual type of fossil clam is found in rock layers high in the Swiss Alps. The same type of fossil clam is also found in the Rocky Mountains of North America. From this, scientists conclude that


Choices:
- atmosphere
- hydrosphere
- lithosphere
- hemisphere

Question: Question: The layered mixture of gases surrounding Earth is called the


Choices:
- Sounds are fluids that travel through air.
- Sounds are waves that travel through matter.
- Sounds are gases that transform into vibrations.
- Sounds are forms of energy that are converted from light.

Question: Question: Paul listens to music through his radio. Which best explains the sound Paul hears?


Choices:
- make their own food
- can grow in soil
- need water to grow
- take in nutrients

Question: Question: Plants are producers because they


Choices:
- the rate of water flow in a stream
- the time it takes for deposition to occur along a stream
- how layers of rocks and soil are formed along a stream
- how water shapes a stream over time

Question: Question: A water hose was left running on a pile of dirt. What feature of stream erosion was most likely being demonstrated?


Choices:
- silt, pebbles, and clay.
- sand, rocks, and clay.
- humus, clay, and sand.
- clay, silt, and rocks.

Question: Question: The best soil mixture for plant growth and drainage is


Choices:
- hydroelectric power
- nuclear power plants
- natural gas generators
- coal-fired power plants

Question: Question: Which of these technologies helps a power company use renewable energy for the production of electricity?


Choices:
- Windmills are expensive to build.
- The wind does not blow all the time.
- Pollution is not created by windmills.
- Populations of birds can be reduced by windmills.

Question: Question: Windmills are used to obtain usable energy from wind. Which would be an advantage of using a windmill?


Choices:
- a nail rusting
- a wall being painted
- water changing to steam
- paper being folded

Question: Question: Which of these is an example of a new substance being formed?


Choices:
- River
- Air
- Thunder
- Cloud

Question: Question: Which of these can make a shadow on the ground during the day?


Choices:
- respiratory system
- skeletal system
- immune system
- excretory system

Question: Question: Which system protects the body by responding to the presence of a virus?


Choices:
- rapid genetic mutation in infected cells.
- consumption of the body's energy resources by viruses.
- release of toxins by viral particles.
- body's inflammatory response to infected cells.

Question: Question: The symptoms of influenza infection are partly caused by the


Choices:
- chloroplast
- mitochondrion
- Golgi complex
- endoplasmic reticulum

Question: Question: Which cellular organelle modifies fatty acids?


Choices:
- the inner core
- the outer core
- the lithosphere
- the asthenosphere

Question: Question: Which part of Earth's structure exists in the solid phase due to low temperatures?


Choices:
- using fur to trap air for warmth
- cracking open clams with a rock
- nursing its young for six months
- closing its ears under water

Question: Question: Which sea otter behavior is learned?


Choices:
- molten rock flowing in the asthenosphere
- convection cells in the lower mantle
- turbulence in the liquid outer core
- radioactive decay in the solid inner core

Question: Question: The magnetic poles of Earth frequently change location. What is the direct cause of this change in magnetic pole location?


Choices:
- medicine and computers.
- manufacturing and home entertainment.
- refrigeration and heating systems.
- communication and transportation.

Question: Question: Years ago, most family members lived near one another. Today, family members often live all over the country. People are able to live far from their loved ones because of the technologies of


Choices:
- nervous and digestive
- nervous and circulatory
- respiratory and digestive
- respiratory and circulatory

Question: Question: Which two body systems would most directly remove extra fluid from a person's lungs?


Choices:
- humus.
- soil.
- gravel.
- fossils.

Question: Question: Sedimentary rock helps scientists piece together the history of Earth most likely using clues from


Choices:
- air
- soil
- sunlight
- water

Question: Question: The energy that is stored in food originally comes from


Choices:
- Gas -> liquid -> solid
- Solid -> gas -> liquid
- Liquid -> gas -> solid
- Solid -> liquid -> gas

Question: Question: Which of these shows how frozen water changes as the temperature of the air increases?


Choices:
- weight
- flexibility
- length
- hardness

Question: Question: Which of the following properties best describes a material's ability to resist scratching?


Choices:
- practicing space walking
- counseling activities for tension
- exercising to maintain strength
- monitoring circadian rhythms

Question: Question: Scientists noted that muscles and bones would need physical stress to remain healthy during manned space flights. Which of these had to be planned for because of this need?


Choices:
- The bird's prey species would decrease in number.
- The food web that the bird belongs to would collapse.
- Trees where these birds build nests would grow taller.
- This bird species would eventually disappear from nature.

Question: Question: If a species of bird stopped reproducing, which of these would happen?


Choices:
- write a brief report
- repeat the experiment
- purchase new equipment
- make a data chart

Question: Question: When performing a new experiment for the first time, a scientist reaches an unexpected conclusion. What must the scientist do in order to have the conclusion accepted by other scientists?


Choices:
- circulatory
- digestive
- endocrine
- respiratory

Question: Question: Which system produces most of the hormones in the human body?


Choices:
- balance
- hand lens
- thermometer
- graduated cylinder

Question: Question: Which tool should a student use to see the patterns on a small object?


Choices:
- less waste.
- lower cost.
- fewer jobs.
- more mistakes.

Question: Question: Robots are used to help manufacture cars. One problem with this is


Choices:
- integumentary and circulatory systems
- digestive and reproductive systems
- endocrine and respiratory systems
- digestive and immune systems

Question: Question: Which two body systems interact to produce antibodies that require essential amino acids?


Choices:
- helium (He)
- hydrochloric acid (HCl)
- hydrogen (H2)
- nitrogen (N2)

Question: Question: Which chemical is a compound?


Choices:
- dominant
- recessive
- polygenic
- sex-linked

Question: Question: Two spotted leopards produce a litter of four cubs. Three of the cubs are spotted and one is solid black. The black coat is probably what type of trait?


Choices:
- hardness
- density
- color
- streak

Question: Question: Which physical property is used to identify a mineral based on its resistance to being scratched?


Choices:
- conduction
- gravitation
- induction
- insulation

Question: Question: A negatively charged rubber rod was brought near some small pieces of paper. The rod's charges repelled the negative charges in the pieces. Which of the following caused the repulsion of the negative charges?


Choices:
- bacteria
- climate
- fungi
- rocks

Question: Question: Mangrove trees are affected by several factors. Which is an abiotic factor contributing to the energy cycle of a mangrove ecosystem?


Choices:
- time
- mass
- distance
- brightness

Question: Question: What does a light-year measure?


Choices:
- cell wall
- cytoplasm
- chloroplast
- chromosomes

Question: Question: Which of these structures in a plant cell allows a plant to make food?


Choices:
- draw the rock shapes
- count the rock numbers
- record the rock types and locations
- measure the rock masses and lengths

Question: Question: Patricia and her classmates are visiting different rocky areas in the city. They want to know what kind of rocks can be found in each area. If the investigation is done correctly, what will Patricia and her classmates do each time they visit an area?


Choices:
- 6
- 12
- 18
- 24

Question: Question: The electrical charge of the nucleus of an atom is +12. How many electrons does the atom have in its neutral state?


Choices:
- public opinion in favor of a revised theory
- corporate sponsorship of a revised theory
- government policy based on a revised theory
- experimental results that support a revised theory

Question: Question: Which of these is a reason that scientists revise theories?


Choices:
- a mixture
- a solution
- a compound
- a precipitate

Question: Question: Which of the following results when hydrogen and chlorine chemically bond to form hydrogen chloride?


Choices:
- the current climate.
- the fossil record.
- glacial movement.
- seafloor spreading.

Question: Question: Scientists are able to conclude that a forested ecosystem existed in Antarctica millions of years ago by studying


Choices:
- erosion
- deposition
- revolution
- rotation

Question: Question: Which Earth movement results in day and night?


Choices:
- fish
- nutrients
- phytoplankton
- dissolved gases

Question: Question: Upwelling moves the water of the deep ocean to the ocean's surface. What else does upwelling move to the surface?


Choices:
- endocrine
- respiratory
- digestive
- urinary

Question: Question: Which body system functions by bringing in oxygen and removing carbon dioxide?


Choices:
- number of continents in the world.
- location of major cities in the country.
- elevation of an area.
- rainfall of desert regions.

Question: Question: A topographic map is primarily used to determine the


Choices:
- releasing thermal energy in irregular spurts.
- absorbing thermal energy from the Sun's rays.
- moving thermal energy from one place to another.
- increasing the ocean's capacity for absorbing thermal energy.

Question: Question: A change in the pattern of warm ocean currents can cause a climate change by


Choices:
- Teeth break food into small pieces.
- Throat muscles push food toward the stomach.
- Stomach acids dissolve food into nutrients.
- Intestinal cells transport nutrients into the blood.

Question: Question: Which part of digestion is mainly a chemical change?


Choices:
- human cell
- cow heart
- oak leaf
- chicken leg

Question: Question: Which object is best seen with a microscope?


Choices:
- a girl hitting a ball with a bat
- a boy pushing a box across the floor
- a girl hammering a nail into a wall
- a boy falling from a tree onto the ground

Question: Question: In which example does an object move because of the force of gravity?


Choices:
- the emissions from volcanic activity
- the level of pollution caused by people
- the amount of ozone in the stratosphere
- the amount of oxygen produced by trees

Question: Question: The U.S. Environmental Protection Agency (EPA) was established in 1970 to address problems that existed in the environment. Which is the EPA most likely interested in reducing?


Choices:
- soil.
- air.
- water.
- pollen.

Question: Question: In order for plants to grow, the cells require nutrients in the form of minerals. The minerals come from


Choices:
- macrophages.
- helper T-cells.
- cells.
- killer T-cells.

Question: Question: HIV makes the body vulnerable to secondary infections by targeting


Choices:
- color
- streak
- luster
- fluorescence

Question: Question: A student is investigating the properties of a mineral. The student tests the mineral by putting it under an ultraviolet light. Which property of the mineral can be identified using this test?


Choices:
- Algae like fertilizer.
- Fertilizer is good for algae.
- Fertilizer improves the genetic traits of algae.
- Algal growth rate increases with fertilizer concentration.

Question: Question: A student plans to grow algal colonies in solutions with different concentrations of liquid fertilizer. Which is a clear and testable hypothesis to guide this investigation?


Choices:
- deposition
- weathering
- sedimentation
- crystallization

Question: Question: Which process is taking place when water freezes between cracks in rocks?


Choices:
- increasing osmosis
- reducing transpiration
- controlling metabolism
- maintaining homeostasis

Question: Question: The human body temperature is normally 98.6°F. As a person exercises, the body temperature starts to increase. As a result of the increased body temperature, the perspiration process begins to cool the body. Which best describes what the body is doing when it perspires?


Choices:
- cell, tissue, organ, organism
- cell, organ, tissue, organism
- tissue, cell, organ, organism
- tissue, organ, cell, organism

Question: Question: In living organisms, the level of organization from least complex to most complex is


Choices:
- world globe
- satellite map
- topographic map
- nautical chart

Question: Question: Which type of model best shows the location of underwater ocean ridges?


Choices:
- radiation.
- insulation.
- convection.
- conduction.

Question: Question: A student put a metal pot on the stove to boil some water. The metal transferred heat to the water through


Choices:
- diet
- color
- health
- independence

Question: Question: Which feature is a kitten most likely to inherit from its parents?


Choices:
- calcium
- carbon
- fluorine
- sodium

Question: Question: Proteins are compounds formed in the cells of plants and animals. Which element is included in every protein molecule?


Choices:
- inertia
- gravity
- magnetism
- momentum

Question: Question: A rocket is traveling toward space. What force must the rocket act against as it moves away from Earth?


Choices:
- wheel and axle
- inclined plane
- pulley
- wedge

Question: Question: A group of workers needs to move a piano from the second floor of a building. The piano is too wide to fit through the door, so they will lower the piano to the ground through a window. Which tool would be best to help the workers lower the piano from the window?


Choices:
- to simulate the air pressure of Earth
- to help astronauts float in outer space
- to protect astronauts from solar radiation
- to provide an oxygen supply for breathing

Question: Question: Why is a spacesuit inflated like a balloon?


Choices:
- chemical weathering
- glacial movement
- sedimentation
- abrasion

Question: Question: Which term best describes the process responsible for cave formation that results from rock being dissolved by groundwater?


Choices:
- The sugar reacts and colors the water.
- The sugar becomes white and the water changes color.
- The sugar evaporates and the water changes color.
- The sugar dissolves and colors the water.

Question: Question: What happens to colored sugar when it is added to water?


Choices:
- Both have a cell wall to give them support.
- Both have a large vacuole to store water.
- Both use mitochondria to produce energy.
- Both use chloroplasts to store energy.

Question: Question: Which statement about plant and animals cells is true?


Choices:
- an abundance of dissolved oxygen
- dead zones where there are no fish
- a reduction in atmospheric carbon dioxide
- food webs with rapidly growing populations

Question: Question: Farm fertilizers are often carried by runoff into the Mississippi River and down to the Gulf of Mexico, resulting in algae blooms. Which of these results from the decomposition of the algae blooms?


Choices:
- learned
- recessive
- inherited
- instinctive

Question: Question: Jennifer is jumping rope. Which type of characteristic is she most likely demonstrating?


Choices:
- mass
- texture
- boiling point
- melting point

Question: Question: A teacher breaks a bar of pure copper into two different sized pieces. Which is the most likely difference between the two pieces?


Choices:
- a cell
- a tissue
- an organ
- a system

Question: Question: Blood is a fluid made up of several different parts. What level of structural organization best describes blood?


Choices:
- forest
- desert
- glacier
- grasslands

Question: Question: Scientists found large areas of fossilized wood in a desert in Arizona. The fossilized wood is evidence of the ancient environment. Based on the evidence, what was the ancient environment in this area?


Choices:
- a flag on a pole
- the temperature on a thermometer
- birds flying above the trees
- the shadow of a building

Question: Question: Ruben is using a compass to find out which direction the wind is blowing. Which of the following would be best for him to observe to help him find the direction of the wind?


Choices:
- experiment
- hypothesis
- observation
- variable

Question: Question: A farmer predicts a new sprinkler will keep water from being wasted. What term best describes this prediction?


Choices:
- the Sun.
- stars.
- the Moon.
- asteroids.

Question: Question: Tides on Earth are mostly caused by the gravitational pull of


Choices:
- flooding
- droughts
- tornadoes
- spring formation

Question: Question: When rain falls on the land, some of it is absorbed by surface sediment. How porous the surface sediments are controls how much water is absorbed. Which of the following will most likely result in an area where surface sediment is NOT porous?


Choices:
- fuel tank
- hydraulic jack
- steering wheel
- windshield wipers

Question: Question: Which of the following parts of a car belongs to its control system?


Choices:
- metal
- wood
- rubber
- plastic

Question: Question: Which substance can be used to conduct electricity in a circuit?


Choices:
- Calorie
- degree Celsius
- milliliter
- gram

Question: Question: Which unit is used to express the amount of energy in food?


Choices:
- a hand lens
- a stopwatch
- a thermometer
- a centimeter ruler

Question: Question: A student measured how quickly a car rolled down a hill. Which tool should the student have used to measure how quickly the car rolled down the hill?


Choices:
- The potential energy increases.
- The evaporation decreases.
- The disorder decreases.
- The entropy increases.

Question: Question: Water at 20 degrees Celsius is placed on a stove. As the water is heated, thermal energy is absorbed by the water. If the water is heated to a maximum temperature of 80 degrees Celsius, what happens as a result of the increased temperature?


Choices:
- series of colors of the rainbow.
- list of radioactive elements.
- band of frequencies of light waves.
- range of conductivity of metals.

Question: Question: The electromagnetic spectrum is described as a


Choices:
- Earth's gravitational attraction to the Sun
- the Moon's revolution around Earth
- the distance of Earth from the Sun
- the tilt of Earth's axis as it revolves around the Sun

Question: Question: Which of the following is most important in producing the seasons on Earth?


Choices:
- Electric fan
- Kerosene heater
- Flashlight
- Baking oven

Question: Question: Which of the following is designed to convert energy into mechanical work?


Choices:
- electrical currents
- magnetic signals
- radio waves
- vibrating air

Question: Question: A student hears the sound of a bell. Which of the following carries the sound of the bell to the student?


Choices:
- minerals
- sand
- organic matter
- silt

Question: Question: The first stage of soil formation is the weathering of rock into fine particles. To make a good soil for growing plants, which would be best to add to the rock particles?


Choices:
- It is still being tested.
- It is true, once written.
- It is different for each continent.
- It is determined in a court of law.

Question: Question: Which best describes a scientific theory?


Choices:
- number of earthquakes that occur each year.
- types of organisms in the environment.
- number of people living in the area.
- type of weather that has occurred.

Question: Question: Scientists are studying the factors that influence the climate of a region. In attempts to gather accurate data, the scientists should use data that includes the


Choices:
- The surfaces absorb energy from the air.
- Friction changes energy of motion to heat energy.
- Moving objects produce heat energy.
- Energy is transferred between the two surfaces.

Question: Question: Why do two surfaces get warm when they are rubbed together?


Choices:
- day.
- hour.
- week.
- month.

Question: Question: Two high tides and two low tides occur on Earth every


Choices:
- The book is not very heavy.
- The table pushes up on the book.
- The book probably has a sticky cover.
- The table is composed of a stronger material than the book.

Question: Question: A book placed on a table is observed to remain stationary. Which statement about the observation would be considered a fact rather than an opinion?


Choices:
- protecting harmless bacterial cells.
- changing viral and bacterial nucleic acids.
- releasing mutated cells from pores.
- removing viruses and bacteria from the skin.

Question: Question: Having students wash their hands frequently with soap and water will limit the spread of infectious disease by


Choices:
- Barometer
- Prism
- Microscope
- Thermometer

Question: Question: Which object helps people understand what makes up white light?


Choices:
- ozone
- methane
- fog
- smoke

Question: Question: Water vapor sometimes condenses into stratus clouds that are in contact with the ground. What forms as a result of this process?


Choices:
- Waste from nuclear power plants
- Spills from chemical manufacturing plants
- Gases from burning fossil fuels
- Gases from aerosol spray cans

Question: Question: One of the main causes of acid rain is


Choices:
- Storing trash bags
- Reusing trash bags
- Burning trash bags
- Recycling trash bags

Question: Question: Which of these activities makes the MOST air pollution?


Choices:
- the population is small.
- migration into the population is occurring.
- immigration into the population is occurring.
- the population is large.

Question: Question: The Hardy-Weinberg law is only valid when


Choices:
- acidic.
- fertile.
- hilly.
- unstable.

Question: Question: Deposition of sediment during floods makes the land near some rivers


Choices:
- burning the tires
- dumping the tires in a lake
- burying the tires in a landfill
- taking the tires to a recycling center

Question: Question: Old, worn-out rubber tires are called scrap tires. Which way of disposing of scrap tires is best for the environment?


Choices:
- air
- water
- sulfur
- copper

Question: Question: Which material is the best conductor of heat at room temperature?


Choices:
- a change of state.
- a chemical reaction.
- the creation of matter.
- the movement of electricity.

Question: Question: A student drops a white tablet into a glass of water, producing carbon dioxide gas. This is a demonstration of


Choices:
- a tissue
- a cell
- a stomach
- a brain

Question: Question: Which of these is a structure that is present in all organisms?


Choices:
- a magnet touching the loop of wire
- a magnet at rest inside the loop of wire
- a magnet at rest outside the loop of wire
- a magnet passing through the loop of wire

Question: Question: Which set of conditions will produce an electric current in a closed loop of wire?


Choices:
- convective heat loss from Earth's mantle
- slowing of the rotation of Earth's core
- increase in the density of Earth's atmosphere
- slow increase in the distance of Earth's orbit

Question: Question: Extensive folding of sedimentary rock layers on Earth provides indirect evidence of certain processes occurring throughout Earth's history. Which of these is most likely one of these processes?


Choices:
- decreases over a period of time and is lost.
- increases and the particles move apart.
- causes the particles to move closer together.
- is converted into potential energy.

Question: Question: An ice cube melts on a hot summer day because the energy of the particles


Choices:
- mutualism.
- competition.
- parasitism.
- commensalism.

Question: Question: The relationship between ticks and a dog can best be described as


Choices:
- frog
- snake
- fish
- human

Question: Question: Small grasshoppers shed their outer covering as they grow larger. Which animal also sheds its outer covering as it grows larger?


Choices:
- positive
- negative
- neutral
- variable

Question: Question: Two atoms of oxygen combine to form pure oxygen gas. What is the electrical charge of the O_{2} molecules?


Choices:
- sound wave
- x-ray
- microwave
- radio wave

Question: Question: Which is not a type of electromagnetic wave?


Choices:
- find new coal resources in the earth
- clean up the litter in neighborhoods
- clean up the water pollution in local lakes
- walk or ride a bike instead of driving a car

Question: Question: What is one way to help slow down or stop the greenhouse effect?


Choices:
- kilometers.
- light years.
- megameters.
- astronomical units.

Question: Question: Great distances in space are measured in


Choices:
- cell membrane
- nucleus
- cell wall
- chloroplast

Question: Question: Which of the following gives a plant cell its rigid structure?


Choices:
- solar energy
- geothermal energy
- hydropower
- biofuel energy

Question: Question: Which alternative energy resource changes part of a river into a lake?


Choices:
- beaker
- lab table
- solution
- water bath

Question: Question: A student in a laboratory transfers a beaker containing a hot solution from the lab table to a cool water bath. Which of the following parts of the system experiences an increase in heat energy?


Choices:
- a light bulb that is turned on
- a car that is parked on top of a hill
- a comet that is flying through space
- a battery that is connected to a circuit

Question: Question: Which example best illustrates kinetic energy?


Choices:
- the Galaxy theory
- the Big Bang theory
- the Steady State theory
- the Oscillating theory

Question: Question: Which theory about the origin of the universe states that a densely packed sphere exploded, forming clouds that condensed into galaxies?


Choices:
- mandibles
- simple eyes
- jointed limbs
- one pair of wings

Question: Question: Which characteristic is shared by all members of Arthropoda and Chordata phyla?


Choices:
- mass of the ball
- inertia of the ball
- velocity of the ball
- force acting on the ball

Question: Question: Which of the following is certain to change as a ball accelerates?


Choices:
- more carbon dioxide will be trapped in the field
- erosion of topsoil will increase in the field
- invasive species will inhabit the field
- animals will dig burrows in the field

Question: Question: One year a farmer decided not to plant crops in one of his fields. During that year his farm received a greater amount of precipitation than normal. Which will most likely occur in that unplanted field as a result of the greater precipitation?


Choices:
- coal, oil, and natural gas
- solar, oil, and geothermal
- wind, solar, and tidal
- natural gas, solar, and tidal

Question: Question: Which group of energy sources are ALL renewable?


Choices:
- They slow down.
- They speed up.
- They decrease in number
- They decrease in size

Question: Question: What happens to the molecules of a liquid when the liquid cools?


Choices:
- a lipid that coats lactose molecules
- an ability to produce lactose internally
- an enzyme that catalyzes lactose breakdown
- a tolerance to lactose developed during childhood

Question: Question: Some individuals are unable to digest the lactose found in the milk of cows. The digestive systems of these individuals most likely lack which?


Choices:
- brain, spinal cord, and eyes
- lungs, esophagus, and heart
- mouth, stomach, and gallbladder
- ovaries, uterus, and fallopian tubes

Question: Question: Use the information below to answer the question. The human body is composed of different systems made of specialized cells, tissues, and organs. Each of these structures has a specific function that aids in the survival of the human species. Which organs are used in reproduction?


Choices:
- If the frequency remains constant, the wavelength increases.
- The wavelength decreases as the frequency decreases.
- The frequency increases as the wavelength decreases.
- If the wavelength remains constant, the frequency increases.

Question: Question: Which of the following best describes the relationship between frequency and wavelength of electromagnetic waves?


Choices:
- sulfur and nitrogen
- helium and hydrogen
- liquid water and carbon
- chlorophyll and oxygen

Question: Question: Which pair would be most necessary for life to develop on another planet?


Choices:
- They both travel at the same speed.
- They are both waves.
- They are both electromagnetic.
- They both travel through a vacuum.

Question: Question: How are light and sound similar?


Choices:
- 0.7 g
- 9.3 g
- 10.0 g
- 19.3 g

Question: Question: When heated, mercuric oxide decomposes to form liquid mercury and oxygen. A scientist heated 10 grams (g) of mercuric oxide and formed 9.3 grams of liquid mercury. How many grams of oxygen were formed?


Choices:
- A mixture
- A compound
- An element
- An alloy

Question: Question: When chlorine gas reacts with sodium metal, what type of substance is formed?


Choices:
- gene
- tissue
- sex cell
- pedigree chart

Question: Question: A structure that carries a single unit of hereditary information is a


Choices:
- chromosomes
- mitochondria
- nuclei
- vacuoles

Question: Question: Muscle cells need to quickly convert energy from food molecules into a usable form. For this reason, which of the following do muscle cells have in greater numbers than most other types of cells?


Choices:
- Turn off water while brushing teeth
- Wash the car every day
- Water the lawn every day
- Run the dishwasher after each meal

Question: Question: Which would help conserve water?


Choices:
- coal and oil
- heat and light
- friction and electricity
- gravity and magnetism

Question: Question: Which of these are both supplied to Earth by the Sun?


Choices:
- red, white, and pink
- red and white
- pink and red
- pink and white

Question: Question: A red flowered plant (RR) is crossed with a white flowered plant (WW) and produces plants with pink flowers (RW). If two pink flowered plants are crossed, what color offspring could be produced?


Choices:
- bees in a hive
- cars on a train
- petals on a flower
- pieces in a jigsaw puzzle

Question: Question: Which is the most accurate model to show how amino acids form proteins?


Choices:
- to produce glucose
- to keep the cell rigid
- to make the cell divide
- to allow the plant to reproduce

Question: Question: What is the main function of the chloroplasts in plant cells?


Choices:
- surface water evaporating into the atmosphere
- planets moving around the Sun in an elliptical pattern
- glaciers melting because of increasing temperatures
- groundwater moving to the surface in an artesian well

Question: Question: Gravity can be defined as a force of attraction between objects. The effects of gravity can be witnessed in many systems. Which of these actions is an example of gravity influencing other systems?


Choices:
- loss of thermal stability
- high nutrient concentration
- consistent surface-current flow rate
- increased availability of dissolved oxygen

Question: Question: Which characteristic of a cold-water upwelling near the coast of Northern California results in a large concentration of marine organisms?


Choices:
- hydrosphere and biosphere
- troposphere and ionosphere
- hydrosphere and lithosphere
- asthenosphere and lithosphere

Question: Question: When mountains are formed, there is an interaction between areas of Earth. Which two will interact and result in the formation of mountains?


Choices:
- be smaller than Earth.
- have a source of light inside.
- have a smoother surface than Earth.
- have fewer impact craters on the surface.

Question: Question: A model of the Moon would be different from a model of Earth in that the Moon should


Choices:
- star, galaxy, solar system, universe
- star, solar system, galaxy, universe
- star, solar system, universe, galaxy
- star, universe, solar system, galaxy

Question: Question: Which of the following correctly lists the structures in space from smallest to largest?


Choices:
- fire
- flood
- landslide
- drought

Question: Question: Some changes are fast. Some changes are slow. Which of these changes is most likely the slowest?


Choices:
- rabies
- influenza
- strep throat
- chicken pox

Question: Question: Which of these diseases is caused by a bacterium?


Choices:
- during collection
- during evaporation
- during condensation
- during precipitation

Question: Question: When is the most energy transferred from the Sun to water in the water cycle?


Choices:
- printing press -> microscope -> telephone
- television -> automobile -> microwave
- airplane -> microphone -> radio
- Doppler radar -> microphone -> telescope

Question: Question: Which of the following shows the correct sequence of inventions?


Choices:
- competing
- decomposing
- germinating
- hibernating

Question: Question: When two animals live in the same area and depend on the same organism for food, they are


Choices:
- The cell wall performs photosynthesis.
- The cell wall stores DNA.
- The cell wall provides structural support.
- The cell wall manufactures proteins.

Question: Question: Which statement describes a primary function of the cell wall of a plant cell?


Choices:
- centimeters
- liters
- grams
- degrees Celsius

Question: Question: Which metric units should be used to describe the mass of an object?


Choices:
- chemical
- light
- magnetic
- sound

Question: Question: Which form of energy is produced when a guitar string vibrates?


Choices:
- minerals
- nitrogen
- soil
- sugar

Question: Question: Andre learned that plants survive through a process called photosynthesis. Which substance do plants produce during photosynthesis?


Choices:
- construction of 3-D models
- advances in the study of DNA
- understanding the process of mitosis
- development of the scientific method

Question: Question: For years, scientists have classified plants according to their characteristics. Which most likely has led scientists to better identify and discover new species of plants?


Choices:
- metal
- plastic
- rubber
- wood

Question: Question: Which material best conducts heat and electricity?


Choices:
- mass and volume
- volume and length of day
- distance from the Sun and mass
- length of day and distance from the Sun

Question: Question: Which two characteristics affect a planet's gravitational attraction to the Sun?


Choices:
- predators
- herbivores
- scavengers
- decomposers

Question: Question: When a prairie ecosystem was disturbed, an invasive grass species outcompeted the native grass. The new grass had less nutritional value for the organisms living in the area. Which category of organism will be affected by this change first?


Choices:
- migrating to habitats that had different types of crops.
- learning how to avoid being exposed to DDT.
- passing the gene for DDT resistance to their offspring.
- competing with other types of insects for food.

Question: Question: In the 1970s, the pesticide DDT was used to kill insects that damaged fruit and vegetable crops. Most insects died from being exposed to DDT, but some survived. These surviving insects contributed to an increase in their population by


Choices:
- gravity between the stars
- energy released from the stars
- nuclear reactions in the stars
- magnetic attraction between the stars

Question: Question: Binary stars orbit around the center of mass of the two stars. What causes the stars to remain together?


Choices:
- quasar
- protostar
- red giant
- white dwarf

Question: Question: After a star runs out of most of its hydrogen fuel, it becomes hotter and more luminous. What stage does this represent in the life cycle of a star?


Choices:
- It decreases soil erosion.
- It increases soil removal.
- It increases fertilizer use.
- It decreases crop yield.

Question: Question: How does no-till farming help the environment?


Choices:
- the mass of the water
- the pressure in the container
- the total energy of the water
- the position of the atoms in the container

Question: Question: In a laboratory, a sealed container with 100 g of steam is cooled until all the steam becomes a liquid. The container is then cooled further until all the water becomes a solid. Which of the following remains constant during both of these changes?


Choices:
- age of seedlings
- temperature of water
- volume of water
- number of hours in sunlight

Question: Question: A student has decided to investigate whether the number of flowers on a plant will increase if the water supply to the plant is increased. She has five pots of geranium plants to use in her experiment. What factor in the experiment should be varied for the five plants in order to answer the student's question?


Choices:
- friction.
- electricity.
- the Sun.
- radioactive decay.

Question: Question: The energy that allows the water cycle to occur comes from


Choices:
- only one cell.
- large cells.
- more than one cell.
- identical cells.

Question: Question: Organisms that are classified as multicellular must have


Choices:
- Into the heart
- Into the stomach
- Into the lungs
- Into the liver

Question: Question: Where does air go when a person breathes in?


Choices:
- competition
- mutualism
- parasitism
- predator-prey

Question: Question: Kudzu vines grow by climbing and wrapping around trees. Trees covered by kudzu can die because they are starved of sunlight. What type of relationship exists between the trees and the kudzu growing on them?


Choices:
- Environmental Protection Agency (EPA)
- Food and Drug Administration (FDA)
- National Oceanic and Atmospheric Administration (NOAA)
- Center for Disease Control (CDC)

Question: Question: In the United States, which is responsible for ensuring the safety of the country's drinking water?


Choices:
- The powder dissolves in the water.
- The water changes color.
- The student stirs the water.
- The water is the proper temperature.

Question: Question: A student makes a fruit drink by stirring a powdered mix into cold water. Why is the fruit drink a solution?


Choices:
- the method used to obtain nutrients and energy
- the process used to constantly remove excess water
- the method used to detect changes in their environment
- the process used to remove waste products from their cytoplasm

Question: Question: Which life function is the same for an amoeba as for other freshwater protists?


Choices:
- miles
- meters
- light years
- astronomical units

Question: Question: Proxima Centauri is the closest star to the Sun. Which units do astronomers most often use for the distance between Earth and Proxima Centauri?


Choices:
- conserving Earth's resources
- creating acid rain
- warming Earth's atmosphere
- increasing the ozone layer

Question: Question: One positive effect of recycling aluminum cans to manufacture new beverage containers is


Choices:
- draw a picture
- make some notes
- make a chart or graph
- tell the science teacher

Question: Question: Students are conducting an investigation to see how sunlight affects the speed of plant growth. They measure the growth of the plant at the end of two weeks. What would be the best way to communicate the results of this investigation?


Choices:
- 2Sn + 4HNO_{3} -> SnO_{2} + 4NO_{2} + H_{2}O
- I_{2} + 5Cl_{2} + 6H_{2}O -> 2HIO_{3} + 10HCl
- Cl + 4Na -> 4NaCl
- 4P + 5HNO_{3} -> 5NO + 3H_{3}PO_{4}

Question: Question: The conservation of matter can be demonstrated by using chemical equations. Which chemical equation demonstrates the conservation of matter?


Choices:
- The polar ice caps will melt.
- Volcanoes will erupt more often.
- The number of earthquakes will decrease.
- Rainforests will be unable to support animal life.

Question: Question: As the amount of carbon dioxide in the atmosphere increases, which occurrence is most likely a long-term result?


Choices:
- quartz
- galena
- bauxite
- diamond

Question: Question: Which mineral, found in Arkansas, is an ore that can be used to produce aluminum?


Choices:
- Sleet and snow
- Rain and thunder
- Wind and snow
- Fog and wind

Question: Question: A summer day begins with a clear, sunny sky. Then, dark clouds form in the afternoon. What type of weather will MOST likely happen next?


Choices:
- fish.
- eggs.
- worms.
- flowers.

Question: Question: Eagles have strong, sharp beaks that are most likely adapted for the eagle to eat


Choices:
- The table is more reactive than the cushion.
- The table vibrates more than the cushion.
- The table is more insulated than the cushion.
- The table has more potential energy than the cushion.

Question: Question: When a spoon hits a table, it makes a loud sound. When the spoon hits a soft cushion, it does not make a sound. What is the difference between the table and the cushion that accounts for the sound?


Choices:
- a change in phase
- thermal expansion
- an increase in entropy
- mechanical advantage

Question: Question: When Dennis operates his lawnmower, he notices the engine makes a lot of noise. He also notices that the engine gets very hot. Which best describes the heat and noise generated from the lawnmower?


Choices:
- only objects that have mass
- only objects that sink in water
- only objects that are made of metal
- only objects that are heavier than air

Question: Question: What objects are affected by Earth's gravity?


Choices:
- cancer
- fertilization
- asexual reproduction
- dynamic equilibrium

Question: Question: Abnormal cell division in humans may result in


Choices:
- They have different body sizes.
- A mule is not able to reproduce.
- They are found in different environments.
- A mule does not resemble either parent.

Question: Question: A donkey and a horse can be bred to produce a mule. Which observation is evidence that donkeys and horses are two different species?


Choices:
- a graph
- a flow chart
- a data table
- a Punnett square

Question: Question: What should students use to identify the percent chance of a trait being passed down from a parent to its offspring?


Choices:
- date of flowering and the fruit yield
- fruit yield and taste of the fruit
- taste of the fruit and smell of the flower
- date of flowering and smell of the flower

Question: Question: Which rankings of trees would most likely useful in a scientific study of fruit production in apple trees?


Choices:
- height
- hair color
- language
- eye shape

Question: Question: Which of the following characteristics is an acquired trait?


Choices:
- intensity of light
- direction of light
- length of day
- time of day

Question: Question: Which stimulus causes a responding plant to demonstrate phototropism?


Choices:
- decreases in powerful hurricanes
- decreases in volcanic eruptions
- increases in earthquakes
- increases in sea level

Question: Question: Estuaries are marine environments located in areas where fresh water from rivers flow into the ocean. Estuaries are one of the most biologically productive ecosystems. Birds, fish, turtles and many other organisms inhabit these ecosystems. Which will most likely cause changes to estuary habitats on a global scale?


Choices:
- stem
- flower
- root
- leaf

Question: Question: The trunk of a pine tree supports the tree. Which part of a daisy supports the plant the same way?


Choices:
- Electromagnetic waves are transverse waves.
- Electromagnetic waves have very low velocity.
- Electromagnetic waves are all visible to human eyes.
- Electromagnetic waves can travel through a vacuum.

Question: Question: What property of electromagnetic waves makes it possible to use these waves to transmit information between a space shuttle and NASA mission control centers on the ground?


Choices:
- a warm, rainy day
- a warm, sunny day
- a warm, cloudy day
- a hot, cloudy day

Question: Question: A student is investigating solar energy by cooking food in an oven powered by the Sun. On which of the following days will the food cook most quickly?


Choices:
- Mercury, Venus, Earth, Saturn, Uranus, Jupiter, Mars, Neptune
- Mercury, Earth, Mars, Venus, Saturn, Jupiter, Neptune, Uranus
- Mercury, Venus, Mars, Earth, Jupiter, Uranus, Saturn, Neptune
- Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Question: Question: Which is the correct order of the planets from the Sun?


Choices:
- a cell
- a tissue
- an organ
- an organ system

Question: Question: Which of these is the basic building block of complex organisms?


Choices:
- blinking
- salivating
- shivering
- sweating

Question: Question: Which human response is most likely to occur because the air temperature is 90°F?


Choices:
- They are in different states and have different temperatures.
- They are in the same state but have different temperatures.
- They are in different states but have the same temperature.
- They are the same state and have the same temperature.

Question: Question: What are the properties of the Earth's crust and mantle that are most responsible for Earth's tectonic activity?


Choices:
- increasing the pressure inside the wings
- decreasing the density of the wings
- increasing the temperature inside the wings
- decreasing the mass of the wings

Question: Question: When a butterfly emerges from its chrysalis, its wings are crumpled. In order to expand its wings, the butterfly hangs upside down, causing fluid to be pumped into the veins of its wings. This pumping most likely expands the wings by


Choices:
- deep roots
- long branches
- thick bark
- wide leaves

Question: Question: Which of the following characteristics will best prevent a tree from being blown over by high winds during a storm?


Choices:
- chloroplasts
- mitochondria
- ribosomes
- vesicles

Question: Question: Both prokaryotes and eukaryotes have small, free-floating organelles. The cell makes these organelles from nucleic acids and amino acids found in food. Without these organelles, the cell could not make proteins. What are these organelles called?


Choices:
- 0°F
- 32°F
- 50°F
- 100°F

Question: Question: Which temperature is the freezing point of water?


Choices:
- The average size of the molecules decreased.
- The average size of the molecules increased.
- The average kinetic energy of the molecules decreased.
- The average kinetic energy of the molecules increased.

Question: Question: Which statement best describes the molecules in a sample of water that was heated from a liquid to a gas?


Choices:
- The objects are stars.
- The objects are planets.
- The objects are located in this solar system.
- The objects heat the atmosphere of Earth.

Question: Question: Constellations are patterns of objects seen in the night sky from Earth. How are the objects in constellations like the Sun?


Choices:
- eye color
- musical taste
- career choice
- interest in reading

Question: Question: Which is a trait a human most directly inherits from its parents?


Choices:
- The molecules briefly form chemical bonds with nearby objects.
- The molecules are always in random motion.
- The molecules transfer an electric charge to the dust particles.
- The molecules frequently change shape.

Question: Question: When observing a very small piece of dust in a liquid under a microscope, the dust appears to jiggle slightly. This movement results from the dust interacting with the molecules in the liquid. What property of the molecules in the liquid causes this effect?


Choices:
- Earth revolves around the sun once per day.
- The moon revolves around Earth once per day.
- Earth revolves around the sun once per year.
- The moon revolves around Earth once per year.

Question: Question: Which of the following happens in our solar system?


Choices:
- the wind blowing against the tires
- the air escaping from the spinning tires
- the rubbing between the ground and the tires
- the heat transferring from the rider's hands to the tire

Question: Question: On a cold day, a student felt the tires of her bike before riding it to the store. When she arrived at the store, she felt the tires again and noticed that they were warmer. What caused the temperature of the bicycle tires to change?


Choices:
- reproduce.
- hold their rigid shape.
- absorb and excrete materials.
- carry out photosynthesis.

Question: Question: Chloroplasts in cells make it possible for the cells to


Choices:
- Pecan trees
- Pine cones
- Hardwood lumber
- Maple leaves

Question: Question: Which of these is the most important product of Virginia forests?


Choices:
- irradiating food
- organic fertilizers
- bacteria to clean up oil spills
- developing larger, sweeter strawberries

Question: Question: Research in which of these areas has the greatest impact on the environment?


Choices:
- solid rock
- molten rock
- ice
- water

Question: Question: The surface of Earth is covered mostly by


Choices:
- circulatory and skeletal systems
- skeletal and excretory systems
- muscular and circulatory systems
- respiratory and muscular systems

Question: Question: Which pair of systems is responsible for the flow of blood in the human body?


Choices:
- the uppermost complete row of the table
- the rows at the bottom of the table connecting two section
- the column at the far left side of the table
- the second column from the right side of the table

Question: Question: Where are the most reactive metals located on the periodic table?


Choices:
- tsunamis
- hurricanes
- asteroid impacts
- volcanic eruptions

Question: Question: What major and potentially catastrophic events can be predicted to occur in the Northern Hemisphere between the months of June and November?


Choices:
- comets.
- the Sun.
- asteroids.
- the Moon.

Question: Question: The pull of gravity from Earth has the greatest effect on


Choices:
- to make it easy to carry
- to keep it simple to build
- to make the screen easy to read
- to provide storage for an electrical cord

Question: Question: What is the main advantage of making a laptop computer light in weight?


Choices:
- Earth to travel halfway around the Sun.
- the Moon to travel halfway around Earth.
- Earth to complete one orbit around the Sun.
- the Moon to complete one orbit around Earth.

Question: Question: It takes 365 days for


Choices:
- discussions among earth scientists about new data
- scientific books defining the layers of Earth
- a lead scientist explaining the structure of Earth
- a physical model of Earth showing its layers

Question: Question: Some scientists once believed that Earth was solid like a marble. Which of these has been most responsible for changes in the scientific view of the structure of Earth?


Choices:
- a timeline
- a pie chart
- a data table
- a line graph

Question: Question: A student wants to organize a group of animals into two categories based on observable external features. Which display will most appropriately show the two categories of animals?


Choices:
- fungi only
- archaea only
- bacteria or archaea
- bacteria or fungi

Question: Question: Ribosomes present in a particular cell are smaller than those found in plants. In which taxonomic group or groups could the cell be classified?


Choices:
- Its path widens.
- Its path bends.
- Its path becomes shorter.
- Its path continues in a straight line.

Question: Question: What happens to the path of a light ray as it passes from air into water at an angle?


Choices:
- radiation.
- light.
- electricity.
- sound.

Question: Question: Vibrations in the air caused by hitting a drum form


Choices:
- Cells form a cell wall.
- Cells increase in size.
- Cells undergo cell division.
- Cells merge to become larger.

Question: Question: As humans grow, their bodies change. Which of these statements explains how humans grow?


Choices:
- earthquake
- volcanic eruption
- flood
- wind storm

Question: Question: Which event below involves a constructive force?


Choices:
- hot spots
- rift valleys
- mountain ranges
- mid-ocean ridges

Question: Question: Which of the following are formed when two crustal plates collide with one another?


Choices:
- It codes for proteins.
- It inhibits division of cells.
- It helps in energy transformation.
- It regulates traffic in and out of the cell.

Question: Question: The nucleus contains DNA. Which statement best describes how DNA controls the working of the cell?


Choices:
- coral reefs that slowly changed size
- desert sand dunes that were shaped by winds
- deposits of sediment found at the mouth of a river
- rock containing fossilized seashells found on a mountaintop

Question: Question: Which of the following provides the best evidence that Earth has evolved over geologic time?


Choices:
- need to consume plant matter.
- use plants for shelter.
- need carbon dioxide released by plants.
- consume other animals that eat plants.

Question: Question: The best explanation of why carnivores are dependent on plants is because they


Choices:
- plant genetics
- disease control
- DNA sequencing
- microbiology

Question: Question: In the late 1600s, Anton van Leeuwenhoek began making observations with simple magnifying lenses that he constructed. To which scientific field is Leeuwenhoek credited with the most contributions?


Choices:
- crust
- mantle
- outer core
- inner core

Question: Question: Which section of Earth is composed primarily of liquid metal?


Choices:
- hydrogen, nitrogen, carbon
- oxygen, sulfur, carbon
- carbon, hydrogen, oxygen
- nitrogen, carbon, sulfur

Question: Question: One way humans store energy is by making the molecule glycogen. Clusters of which atoms are rearranged when the body digests plant sugars to make glycogen?


Choices:
- one hundred thousand.
- one hundred million.
- one hundred billion.
- one hundred trillion.

Question: Question: The number of stars in the Milky Way Galaxy is best estimated as


Choices:
- enzymes
- vitamins
- lipids
- nucleotides

Question: Question: Which type of substances serves as a catalyst for reactions that break large food molecules into smaller useful molecules?


Choices:
- makes the object move
- makes the object stay still
- pushes the object upward
- pulls the object downward

Question: Question: What effect does gravity always have on an object on Earth?


Choices:
- blocked sunlight casts a shadow
- sunlight evaporates water from a lake
- oxygen absorbs sunlight forming ozone molecules
- a prism refracts sunlight into light of different wavelengths

Question: Question: Which is the best example of a chemical reaction?


Choices:
- hormone secretion
- metamorphosis
- fertilization
- cell division

Question: Question: Some one-celled organisms can reproduce by the process of


Choices:
- wind energy.
- nuclear energy.
- electrical energy.
- solar energy.

Question: Question: One important use of coal is to produce energy for homes. Coal can be burned and converted to


Choices:
- Air
- Blood
- Orange juice
- Salt

Question: Question: Which of the following is NOT a mixture?


Choices:
- Light energy
- Solar energy
- Kinetic energy
- Renewable energy

Question: Question: What kind of energy do all moving objects have?


Choices:
- The squirrel population would increase.
- The hawk population would decrease.
- The fox population would decrease.
- The tree population would increase.

Question: Question: In a forest ecosystem, the squirrels eat seeds from trees. The squirrels are then eaten by hawks, owls, and foxes. If there were no more owls present in this ecosystem, which would most likely happen in the forest?


Choices:
- the Sun
- the Moon
- Earth's core
- Earth's mantle

Question: Question: Which of the following has the greatest direct influence on movement of the lithosphere?


Choices:
- pollution
- climate change
- habitat destruction
- tectonic plate motion

Question: Question: When humans first began to grow crops, which of these most likely contributed to the extinction of native animal species?


Choices:
- Chopping down trees with an ax in the backyard
- Collecting fall leaves
- Cutting grass with a gas-powered lawnmower
- Picking colorful wildflowers along the highway

Question: Question: Which of these does the MOST harm to the air?


Choices:
- diffraction of light.
- tectonic features on planets.
- the surfaces of small objects.
- topographical features on the ocean floor.

Question: Question: A scanning electron microscope is best suited for observing


Choices:
- a physical characteristic.
- a learned behavior.
- an inherited behavior.
- an adaptation.

Question: Question: A bird eats a brightly-colored insect that tastes bad. The bird avoids preying on this type of insect again. This example is best described as


Choices:
- run
- mate
- hide
- hibernate

Question: Question: In winter, the arctic fox has white fur. In summer, its fur changes color to brown and gray. The change in fur color helps the arctic fox to ___.


Choices:
- Hills are smaller and more rounded.
- Hills are deeper and more level.
- Hills are steeper and rockier.
- Hills are taller and snowy.

Question: Question: In which ways are hills most different from mountains?


Choices:
- hibernate in winter
- shelter its offspring
- produce more feathers
- eliminate waste

Question: Question: A bird builds a nest to


Choices:
- They vibrate in place within a fixed volume.
- They move around freely within a fixed volume.
- They vibrate in place and take the shape of a container.
- They move around freely and take the shape of a container.

Question: Question: Which statement best describes the motion of the molecules of a solid object?


Choices:
- The water evaporates and the salt remains in the beaker.
- Both the salt and the water evaporate and leave the beaker.
- The salt becomes a new compound.
- The salt will evaporate from the water and disperse into the environment.

Question: Question: What happens when salt water is boiled?


Choices:
- Cl, Br, and F
- K, Ca, and Sc
- Kr, Cl, and O
- Be, C, and O

Question: Question: Which set of elements has similar bonding properties?


Choices:
- circulatory
- digestive
- nervous
- skeletal

Question: Question: Which body system processes foods into a useable source of energy?


Choices:
- typing results into a computer
- intuition
- writing facts in a field notebook
- observing the deer in their own habitat

Question: Question: What is the best way for a scientist to begin an investigation on a population of deer?


Choices:
- color
- temperature
- reflectivity
- conductivity

Question: Question: Which property of an object describes how easily electricity travels through it?


Choices:
- The Sun is very pretty.
- The Sun is fun to study.
- The Sun is larger than Earth.
- The Sun is more interesting than the Moon.

Question: Question: Which is a statement of fact?


Choices:
- flowing water
- natural gas
- sunlight
- wind

Question: Question: Sydney is learning about the sources of energy that can run out. Which energy source will run out the fastest?


Choices:
- primary species.
- secondary species.
- succession species.
- pioneer species.

Question: Question: The first organisms to occupy an area after a prairie fire are known as


Choices:
- ulcer
- malaria
- tuberculosis
- influenza

Question: Question: Which of the following is caused by a virus?


Choices:
- diffract and spread out.
- diffract and come to a focal point.
- refract and come to a focal point.
- refract and spread out.

Question: Question: When a beam of light passes through a clear, convex lens, the light will mostly


Choices:
- eating raw vegetables
- drinking lemonade
- invading bacteria
- running in cold weather

Question: Question: The symptoms of strep throat infection are a red and swollen throat. What is the most likely cause of strep throat?


Choices:
- have a lower temperature
- have less kinetic energy
- are moving faster
- are closer together

Question: Question: Compared to the particles in a hardened lava sample, the particles in a liquid lava sample


Choices:
- They both have rocky surfaces.
- They both have active volcanoes.
- They both have similar atmospheres.
- They both have the same gravitational pull.

Question: Question: Which characteristic do both the Moon and Earth share?


Choices:
- Temperatures would increase.
- Precipitation would increase.
- The number of trees in the forest would increase.
- The insect population in the forest would increase.

Question: Question: Which would be the most likely effect of a large decrease in the number of woodpeckers in a forest?


Choices:
- growing and reproducing
- germinating and making food
- growing and making food
- germinating and reproducing

Question: Question: Which two life processes occur in both plants and humans?


Choices:
- lenses.
- metals.
- chemical mixtures.
- the making of leather.

Question: Question: In order for Galileo to build a telescope, he needed to know about


Choices:
- beak shape
- eye position
- feather pattern
- tail-feather length

Question: Question: A birdwatcher wants to identify an eastern bluebird. What feature of a bird should the birdwatcher evaluate first to identify an eastern bluebird?


Choices:
- more stable.
- an isotope.
- an ion.
- less charged.

Question: Question: When a neutral atom gains or loses electrons, it becomes


Choices:
- weaker bones
- less energy
- better hearing
- stronger heart

Question: Question: Which is an effect of regular exercise?


Choices:
- time.
- distance.
- luminosity.
- temperature.

Question: Question: A light year is used to measure


Choices:
- final velocity.
- initial velocity.
- escape velocity.
- terminal velocity.

Question: Question: As an object falls, air resistance gradually increases until it is equal with the pull of gravity. This effect is called


Choices:
- gold.
- helium.
- sodium.
- aluminum.

Question: Question: All of these elements are metals except


Choices:
- they are part of the instructions.
- they are used to test a hypothesis.
- they are required to make a hypothesis.
- they keep you safe during an investigation.

Question: Question: Observation and measurement are important to scientific investigations because


Choices:
- cool ocean currents circulating towards the equator
- increased volcanic activity in the upper latitudes
- cold air moving south from the North Pole
- warm water temperatures in the tropics

Question: Question: When air rises over the open ocean, a low pressure system is formed. Which factor increases the potential of a low pressure system developing into a hurricane in the Northern Hemisphere?


Choices:
- These mountains were once under the ocean.
- These mountains once had a more rainy climate.
- Mountain river clams evolved from ocean clams.
- Ocean clams evolved from mountain river clams.

Question: Question: Imprints of the shells of ocean clams are often found in the rocks of the Appalachian Mountains. What do these imprint fossils most likely indicate?


Choices:
- burrowing below the frost point of the soil surface
- burrowing in tree trunks above the soil surface
- consuming roots found under the soil surface
- consuming organisms found in the soil surface

Question: Question: A population of ground squirrels has established a community in the grasslands of the Great Plains. Temperatures often reach -15°C for most of the winter. What is the most likely behavior the ground squirrels use to survive these winter temperatures?


Choices:
- biome
- ecosystem
- community
- population

Question: Question: Which is the lowest level of environmental organization that would include the water quality and air temperature in an area?


Choices:
- Inclined plane
- Pulley
- Wedge
- Lever

Question: Question: When you bend your arm at the elbow, the bones and muscles in your arm are acting as a system. What simple machine does this system represent?


Choices:
- It becomes a gas.
- It becomes a solid.
- It gets new atomic bonds.
- It gets destroyed.

Question: Question: A student places a pan of water on the stove. What happens to some of the water as it is heated to a boil?


Choices:
- electrons, neutrons, and protons
- electrons, protons, and gamma rays
- neutrons, photons, and beta particles
- neutrons, protons, and alpha particles

Question: Question: What are the parts that make up an atom?


Choices:
- Convection carries heat to the thermometer.
- Radiant energy warms the thermometer.
- Mechanical energy from the flame carries heat to the thermometer.
- Heat from the flame is conducted through the metal rod to the thermometer.

Question: Question: One end of a metal rod is placed over a flame during an investigation. A thermometer is touching the opposite end of the metal rod. Which best describes what is happening during this investigation?


Choices:
- when glaciers melt.
- from earthquakes.
- when land sinks.
- along tectonic plates.

Question: Question: Mountains are most likely formed


Choices:
- Earthworms like the taste of dirt better than sand.
- Earthworms are happier in black dirt than red dirt.
- Earthworms exist to decompose decaying materials.
- Earthworms will move away from direct light sources.

Question: Question: Read the information about Alice's science project then answer the question. Alice needed to design a science project. She decided that she wanted to focus her project on how an earthworm's behavior helps it survive. Alice wrote down four ideas about earthworm behavior that she wanted to test. Which idea can be tested experimentally?


Choices:
- They are noble (inert) gases.
- They are nonmetals.
- They have the same thermal conductivity.
- They have the same number of protons.

Question: Question: What do the elements sulfur (S), nitrogen (N), phosphorus (P), and bromine (Br) have in common?


Choices:
- a gene
- a protein
- a platelet
- a DNA molecule

Question: Question: Tissue plasminogen activator is a natural blood thinner. The coded sequence for the blood thinner is called PLAT , found on chromosome 8. It is used to treat people who have heart attacks and strokes. Tissue plasminogen activator can be made through genetic engineering. What is tissue plasminogen activator?


Choices:
- inches, grams, ounces
- inches, pounds, ounces
- centimeters, grams, milliliters
- centimeters, pounds, milliliters

Question: Question: Which of these groups contains only metric measurements?


Choices:
- gamma radiation
- infrared radiation
- radio waves
- visible light

Question: Question: Scientists use large optical telescopes to obtain information about the planets in the solar system. What wavelengths of electromagnetic radiation provide this information?


Choices:
- Jonas Salk
- Neil Armstrong
- Albert Einstein
- Jacques Cousteau

Question: Question: Which scientist is credited for the development of the polio vaccine?


Choices:
- large reptiles and amphibians
- small birds and mammals
- mosses and lichens
- bushes and vines

Question: Question: When a volcano erupts, new lava is deposited on the slopes of the volcano. After the lava cools and hardens, which types of organisms will most likely be the first to live on the new material?


Choices:
- muscular system
- nervous system
- digestive system
- circulatory system

Question: Question: Ella waves good-bye from the bus. What body system pulls on bones to let Ella wave her arm?


Choices:
- 7 a.m.
- 2 p.m.
- 9 p.m.
- midnight

Question: Question: Coral reefs are found in shallow tropical ocean waters. A coral reef is a diverse ecosystem that is supported by the photosynthesis of marine plants and the algae that live within the tissues of the coral. Given this information, when would the waters in a coral reef likely have the highest dissolved oxygen concentration?


Choices:
- tides
- gravity
- electricity
- magnetism

Question: Question: What keeps the planets in orbit around the Sun?


Choices:
- Earth rotating on its axis
- the Moon rotating on its axis
- Earth revolving around the Sun
- the Moon revolving around Earth

Question: Question: As seen from Earth, the appearance of the Moon changes throughout the month. What causes the appearance of the Moon to change?


Choices:
- to perform repetitive tasks
- to determine the trunk space
- to demonstrate passenger comfort
- to perform quality control inspections

Question: Question: In producing an automobile, which of the 27 following is the best use of a robot?


Choices:
- evidence of sea floor spreading.
- topographic mapping of mountain ranges.
- an analysis of soil at the plate boundaries.
- volcanic activity along coastlines.

Question: Question: The Theory of Plate Tectonics is based on


Choices:
- migrate
- reproduce
- make food
- change color

Question: Question: Which of the following must all plant and animal species do in order for each species to survive?


Choices:
- transferring impulses to the appropriate muscle
- receiving sensory impulses from the environment
- delivering regular impulses to the autonomic system
- processing impulses within the cerebral cortex

Question: Question: Which activity illustrates the main function of the motor neuron complex?


Choices:
- a hawk eating a mouse
- worms tunneling through soil
- bacteria feeding on dead plants
- a plant using nitrogen to make proteins

Question: Question: Nutrients are recycled when materials decompose in an ecosystem. Which is the best example of the decomposition process where organic material is recycled in an ecosystem?


Choices:
- to absorb sunlight
- to absorb water
- to make seeds
- to make food

Question: Question: What is one function of tree roots?


Choices:
- calories
- decibels
- newtons
- watts

Question: Question: Food contains stored chemical energy. Which units of measurement can be used to compare the amounts of energy in different foods?


Choices:
- weathering.
- deposition.
- faulting.
- erosion.

Question: Question: The freezing and expanding of water in the cracks of rocks is a form of


Choices:
- camp in the woods
- use biodegradable materials
- visit a landfill
- use disposable plates

Question: Question: Which of the following is a way that everyone can help with conservation efforts?


Choices:
- for navigation
- to predict weather
- to measure temperature
- for mineral identification

Question: Question: Historically, how has the compass been used?


Choices:
- an immune response.
- a bacterial infection.
- bruising of tissues.
- an allergic reaction.

Question: Question: A cut to the skin is treated with antiseptic first to avoid


Choices:
- using open flames to heat all materials
- keeping your cell phone on the laboratory countertop
- knowing where your instructor/laboratory leader is at all times
- removing your safety glasses when moving from station to station

Question: Question: Which would be a safe practice to exercise during laboratory investigations?


Choices:
- The Earth turns on its axis.
- The Moon turns on its axis.
- The Moon orbits around the Earth.
- Clouds cover the Moon.

Question: Question: The shape of the moon appears to change regularly during each month. Which of the following best explains why the shape of the moon appears to change?


Choices:
- The soil absorbs sunlight.
- Water filters through the soil.
- Organic matter is decayed in the soil.
- The soil is exposed to air.

Question: Question: How do the nutrients necessary for plant growth get into the soil?


Choices:
- Roots
- Stems
- Leaves
- Flowers

Question: Question: Which part of a sunflower plant absorbs water and nutrients?