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Question: All matter is made up of particles called
Answer: atoms |
Question: Which of the following energy conversions takes place in a battery-operated flashlight?
Answer: chemical -> electrical -> light |
Question: Which of these is most likely harmful to an ecosystem?
Answer: Building new homes in a wetland |
Question: Which units are best to measure the amount of rain that fell during a thunderstorm?
Answer: centimeters |
Question: Noah visited a park that had many oak trees. Which best describes the role of an oak tree in its ecosystem?
Answer: Oak trees are a source of food and shelter for animals. |
Question: Which of these resources will most likely be depleted first?
Answer: Fossil fuels |
Question: When athletes begin to exercise, their heart rates and respiration rates increase. At what level of organization does the human body coordinate these functions?
Answer: at the system level |
Question: A student heated a pan of soup on a stove. While stirring the soup with a metal spoon, the student noticed the spoon became very warm. What is the most likely reason the spoon became warm?
Answer: Heat from the soup was transferred to the spoon. |
Question: Where does a landslide begin?
Answer: a mountain |
Question: Students are learning about the natural resources in Maryland. One group of students researches information about renewable natural resources in the state. The other group researches information about nonrenewable natural resources in the state. The resources the students investigate include plants, animals, soil, minerals, water, coal, and oil. Aluminum is a nonrenewable natural resource. Which of these methods of aluminum disposal is best for the environment?
Answer: recycling it |
Question: Which of the following keeps the planets in our solar system in orbit around the Sun?
Answer: gravitational force |
Question: Which human organ system primarily exchanges gases between the body and the atmosphere?
Answer: respiratory |
Question: Moving water was the most important factor in forming which of these?
Answer: the Grand Canyon |
Question: Which list contains only nonliving things?
Answer: water, rocks, sunlight |
Question: Which type of energy conversion occurs in a flashlight?
Answer: chemical to light |
Question: Rocks that contain fragments of bones, shells, and plant remains are most likely
Answer: sedimentary. |
Question: Which reaction is endothermic?
Answer: cold pack |
Question: Which property of water can cause a rock to break apart?
Answer: Water expanding as it freezes. |
Question: With a microscope, you see that an object has a cell wall, a chloroplast, and a nucleus. What is being observed?
Answer: a plant cell |
Question: Which instrument would be best to measure the volume of a liquid?
Answer: a graduated cylinder |
Question: Which part of an atom is involved in chemical reactions?
Answer: negatively-charged particles |
Question: Which tool is best used to collect information about the weather?
Answer: thermometer |
Question: Which of these characteristics best helps scientists classify organisms?
Answer: structure |
Question: Which resource is most likely found in large amounts in forest ecosystems?
Answer: wood |
Question: Which of the following best describes a role of mushrooms in ecosystems?
Answer: breaking down dead plant material |
Question: A gardener wants to increase the ability of garden soil to retain water. Which of these should the gardener add to the soil?
Answer: organic material |
Question: In the life cycle of a fly, which stage comes after the larval stage?
Answer: pupa |
Question: In which example could a thermometer be used to show that heat energy is being transferred?
Answer: A stove is used to boil water in a pan. |
Question: What is the most likely function of a turtle's hard shell?
Answer: provide protection |
Question: What is the main source of energy that causes water to evaporate from the surface of Earth?
Answer: sun |
Question: Which terms can be used to describe the properties of both a wave and a particle of light?
Answer: speed and frequency |
Question: To use energy from the Sun to power household appliances, the solar energy must be converted to
Answer: electrical energy. |
Question: The yellow-throated longclaw is a bird that lives on the dry savanna of Africa. It looks almost exactly like another bird, the western meadowlark of North America. Although the birds look very similar, they are not even in the same taxonomic family. Scientists think the birds look alike because the two species developed under similar environmental pressures, even though they developed thousands of miles apart. Which process does their development demonstrate?
Answer: convergent evolution |
Question: The reaction that releases energy for use by the cell occurs in which site?
Answer: mitochondrial membrane |
Question: Why do doctors suggest that people get a flu vaccine each year?
Answer: Viruses can mutate from year to year. |
Question: Which of the following events involves a consumer and producer in a food chain?
Answer: A deer eats a leaf. |
Question: The change from day to night on Earth can be explained by
Answer: the rotation of Earth. |
Question: Which part of a bicycle BEST moves in a circle?
Answer: Foot pedal |
Question: When animals use energy, what is always produced?
Answer: heat |
Question: Which type of rock is formed when hot lava cools?
Answer: igneous |
Question: Which environmental factor would most likely prevent an orange tree from surviving in the desert?
Answer: the lack of moisture |
Question: After a rainstorm, a big pile of rocks blocks part of a mountain road. Which event most likely caused the rocks to move onto the road?
Answer: a landslide |
Question: What would be the result of adding one proton to an atom?
Answer: the atomic number would change |
Question: What would be the best source to find information about DNA testing?
Answer: scientific journals |
Question: In what section of Earth do earthquakes happen?
Answer: crust |
Question: A complete fossil has been found of a type of bird that cannot be identified. What can most likely be determined about the bird from the fossil?
Answer: The bird existed at one time but is now extinct. |
Question: When large areas of the rainforests are cleared and burned, climate can be affected. Which best explains how rainforest destruction can contribute to the greenhouse effect?
Answer: by releasing carbon into the atmosphere |
Question: Which information is used in a station model?
Answer: wind direction in a particular point and time |
Question: Which part of a plant is most responsible for using energy from the Sun to produce food for the plant?
Answer: leaf |
Question: Which natural formation is the best example of the result of both constructive and destructive forces such as weathering, erosion, and deposition of sediment?
Answer: The Grand Canyon |
Question: Which characteristic helps a fox find food?
Answer: sense of smell |
Question: Tay-Sachs disease is a recessive genetic disorder. If only one gene is present, an individual is a carrier. What is the probability of two healthy Tay-Sachs carriers having a child that has the disease?
Answer: 25% |
Question: Two identical lamps contain the same amount of different types of oil. They are allowed to burn until all the oil has been burned. Which measurement will best provide the total difference in chemical energy between the two oils?
Answer: time it took for lamps to use oil |
Question: Which disease is a result of abnormal cell division?
Answer: cancer |
Question: During which season of the year would a rabbit's fur be thickest?
Answer: winter |
Question: Which property of an element is determined by adding the number of protons and number of neutrons?
Answer: atomic mass |
Question: Which of these cycles takes 24 hours?
Answer: Earth rotating on its axis |
Question: Lemon juice turns litmus paper red, is corrosive and tastes sour. Lemon juice is classified as
Answer: an acid. |
Question: A child walks across a carpet and generates an electrical charge. The child will get a slight shock by touching a
Answer: metal doorknob. |
Question: Which animal eats only plants?
Answer: Rabbit |
Question: A newborn kangaroo has the ability to crawl into its mother's pouch to drink milk. This is an example of
Answer: an instinct. |
Question: Which characteristic is shared by Earth and the Moon?
Answer: an orbit created by the force of gravity |
Question: The Piedmont and Coastal Plains regions in Maryland produce crops such as corn, soybeans, wheat, tobacco, tomatoes, and apples. Which environmental factor most likely influences which crops are grown in these regions?
Answer: soil quality |
Question: Which organ system is responsible for the exchange of oxygen and carbon dioxide between the body and the environment?
Answer: respiratory |
Question: Which of these will always produce a magnetic field?
Answer: an electric current |
Question: The periodic table provides information about the atoms of different elements. Which is a characteristic of an atom determines what element it is?
Answer: number of protons |
Question: Joel made some measurements and recorded this data: Sample 1 - 45 mL Sample 2 - 15 mL Sample 3 - 30 mL Sample 4 - 20 mL Which of these tools would most likely have been used to obtain these measurements?
Answer: graduated cylinder |
Question: A teacher demonstrates a chemical reaction. A student observes that the test tube in which the reaction occurs becomes warm. What is the source of the thermal energy generated by the reaction?
Answer: energy stored in the reactants |
Question: Deer provide food for wolves. How does this relationship also benefit the deer herd?
Answer: by controlling the deer population |
Question: In what way does society benefit from research on diseases?
Answer: Many illnesses will be prevented or cured. |
Question: Which energy transformation takes place in a gasoline lawn mower?
Answer: chemical energy to mechanical energy |
Question: Which of the following can only be seen with a telescope?
Answer: the moon-like phases of Venus |
Question: The rocks that form most of the Sierra Nevada are granitic rocks. This means that the mountains were most likely formed by
Answer: volcanic activity. |
Question: In 1872, the United States created a national park called Yellowstone. The park includes more than two million acres in the three states of Idaho, Montana, and Wyoming. Which statement best explains why national parks have a positive effect on ecosystems?
Answer: National parks limit mining, logging, and hunting. |
Question: According to the endosymbiotic theory, double-membrane mitochondria originated as a result of some larger eukaryotic cells with flexible membranes engulfing smaller prokaryotic cells. Which of these explains where the outer layer of the double membrane of the mitochondria originated?
Answer: the plasma membrane of the eukaryotic host |
Question: Toni got a cut on her arm while playing in a softball game. A few weeks later, the cut was healed. Which process is most responsible for repairing the cut?
Answer: reproduction of skin cells |
Question: A pot of cold water was heated on a stove until the water boiled. Which of the following best explains why the water was able to boil?
Answer: The cold water absorbed heat from the pot. |
Question: A spring-fed stream forms a pond that contains watercress plants, minnows, and crayfish. The pond receives 5 hours of direct sunlight every day. Which of the following is an abiotic factor in this ecosystem?
Answer: the pond water |
Question: A modern theory of the origin of the universe proposes that the first atoms formed were primarily atoms of which element?
Answer: hydrogen |
Question: A star is a large astronomical body that
Answer: emits light. |
Question: What happens to water when it boils?
Answer: It changes into water vapor. |
Question: Ms. Bristol measured the mass of a closed beaker containing several ice cubes. The mass was 100 g. An hour later, after the ice cubes had melted, Ms. Bristol measured the mass of the beaker again. What was the mass of the beaker of water the second time?
Answer: 100 g |
Question: A student has two solid samples of the same substance. Which property do the substances most likely have in common?
Answer: density |
Question: In which object does chemical energy most likely transform into electrical energy?
Answer: a flashlight |
Question: What is the mass number of an atom with 17 protons, 17 electrons, and 18 neutrons?
Answer: 35 |
Question: Some machines can remove the salt that is in seawater. How does removing salt from seawater most help people?
Answer: provides useable drinking water |
Question: Which body system is most affected by a disease that causes the bones to become weak and brittle?
Answer: skeletal |
Question: Why can a small fire be put out by placing a heavy blanket over it?
Answer: This keeps oxygen from reaching the fire. |
Question: There is a river at the base of Mount Tom. In the spring the water level is usually very high. In the summer it is lower. The higher level of water during the spring comes from
Answer: melting snow. |
Question: Earthquake waves are recorded by seismograph machines. What does an earthquake wave transmit?
Answer: energy |
Question: The snowshoe hare was once common in Maryland. In 1986, researchers in the state noted that the snowshoe hare was no longer found in Maryland. Which statement best explains why the snowshoe hare is no longer found in Maryland?
Answer: Housing developments have replaced fields. |
Question: In the initial stages of manned space exploration, scientists needed to address adequate nutrition to provide astronauts with energy throughout the mission. Which of these criteria could not be used when considering food and energy for astronauts during manned space flights?
Answer: history of space food |
Question: Which is the best example of evaporation?
Answer: a puddle drying in the sun |
Question: In a forest community, trees produce leaves that can be eaten by deer. The leaves also fall to the forest floor during autumn. Fungi break the leaves down into nutrients that enter the soil. What is the decomposer in this forest community?
Answer: the fungi |
Question: Compared to Earth, the Moon is
Answer: drier. |
Question: What process forms an image in a mirror?
Answer: reflecting light |
Question: Which is an example of a physical change?
Answer: ice melting |
Question: Which of the following describes an object that must have a net negative charge?
Answer: It contains more electrons than protons. |
Question: Rocks found on Earth are classified as sedimentary, metamorphic, or igneous based on
Answer: how the rocks were formed. |
Question: Which of the following is formed when two elements combine chemically?
Answer: a compound |
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