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Question: Arteries and veins are two important parts of the circulatory system. What is the relationship between arteries and veins?
Answer: They work together to transport nutrients. |
Question: Which function is a role of a feedback system?
Answer: regulation of growth in the skeletal system |
Question: Which technique will researchers studying the inheritance patterns of various disorders most likely use?
Answer: chromosomal analysis |
Question: If a lake is polluted, which organism would most likely accumulate the highest concentration of contaminants?
Answer: fish-eating birds |
Question: Which of these can only be found in a plant cell?
Answer: a chloroplast |
Question: The Milky Way Galaxy is visible as a bright region in the night sky. Modern telescopic observation has made it possible to discover that the brightness of the Milky Way Galaxy is due primarily to which structure?
Answer: large numbers of stars |
Question: More sulfur dioxide is being added to the atmosphere. How will this most likely affect the hydrosphere?
Answer: The acidity of the ocean will increase. |
Question: Plants transform energy when they make their own food. Which type of energy is used by plants for making food?
Answer: light |
Question: Dominic placed a caterpillar in a container with different kinds of leaves. Which information should he record to find out what food this caterpillar eats?
Answer: the type of leaves the caterpillar has eaten |
Question: Which class of elements best conducts electricity?
Answer: metals |
Question: What are the products in the chemical reaction below? NaOH + HCl -> NaCl + H_{2}O
Answer: sodium chloride and water |
Question: Termites eat wood but cannot digest it. Protozoans live in the termites' stomachs and use enzymes to break down the wood. The digested wood provides nutrition for both the termites and the protozoans. What type of relationship is this?
Answer: mutualism |
Question: In the Adirondack forests of New York, some trees have died. The change in the forest is thought to be related to air pollution and rain. Which abiotic factor most likely has been changed as a result of the pollution and rain which resulted in the death of the trees?
Answer: a decrease in the pH of the soil |
Question: The first step in the construction of a building typically involves
Answer: clearing the land. |
Question: What biological concept was Mendel studying when he crossed pea plants many times over many generations?
Answer: dominant and recessive traits |
Question: The following represents a number displayed on a calculator. 1.454545 E3. Which of the following shows how a student should record this number in a laboratory report?
Answer: 1.45 x 10^3 |
Question: In which process is nitrogen from the air put into a form that plants can use?
Answer: nitrogen fixation |
Question: The surface of the Moon is covered with craters. Most of these craters were formed by
Answer: the impacts of many meteoroids |
Question: Which event would most likely occur if the number of nitrogen fixing bacteria were reduced within an ecosystem?
Answer: the level of nitrogen gas in the atmosphere would increase |
Question: Census data show that the human population doubled from 2.65 billion in 1953 to 5.3 billion in 1990. If it continues to double at this rate, the human population could reach 10 billion by the year 2020. Which best explains how this rate of human growth can harm the environment on which humans depend?
Answer: by using resources faster than they can be replaced |
Question: Bats find their prey at night using one of their senses to detect echoes. What does the bat send out to find prey?
Answer: sound |
Question: Which two objects produce their own light?
Answer: sun and candle |
Question: Which example describes an organism taking in nutrients?
Answer: a girl eating an apple |
Question: In eukaryotic organisms, interaction between which organelles is most important for cell shape, tensile strength, and communication between cells?
Answer: cytoskeleton and cell membrane |
Question: A radio station broadcasting across a large area is experiencing thunderstorms. How will the radio waves from the station be affected?
Answer: frequency will be distorted |
Question: An electrical circuit can be used to break down water into hydrogen and oxygen. In this process, electrical energy produces
Answer: chemical changes. |
Question: Which method could be used to separate a solution of table salt and water?
Answer: evaporation |
Question: Which is an example of light being reflected?
Answer: looking into a mirror |
Question: What is the MAJOR role of the Sun in the water cycle?
Answer: It causes evaporation. |
Question: Which activity is an example of a chemical change?
Answer: burning wood to produce ashes |
Question: A city has a temperature of 75 °F, with partly cloudy skies. Weather forecasters are predicting that the air pressure and temperature will drop during the day. Which type of weather is most likely for this area in the late afternoon?
Answer: rainy. |
Question: In Maryland, most bears have thick, dark fur. Which statement best explains how dark fur helps bears survive in the forests of Maryland?
Answer: Dark fur helps bears hide. |
Question: Nicole was studying different ecosystems. She compared the number of plants living in a forest to those in a desert. Which factor best explains why more plants may survive in a forest?
Answer: There is more rain in the forest. |
Question: A short plant with a thick, fleshy stem, extensive roots, and a short blooming period would most likely be found in which of the following environments?
Answer: desert |
Question: What happens when oil is placed in water?
Answer: The oil floats on top of the water. |
Question: A decomposer is an organism that
Answer: breaks down dead plants and animals |
Question: Which of the following correctly orders part of a fish's respiratory system from the least complex to most complex?
Answer: cells -> tissues -> gills |
Question: Most birds sit on their eggs until they hatch. Which of these is the most important reason why birds sit on their eggs?
Answer: to keep the eggs warm |
Question: A lab technician places a colony of bacterial cells in a nutrient-rich growth medium. Which event is the technician most likely to observe with a microscope?
Answer: cell division |
Question: When sound waves with large amplitude are compared to sound waves with small amplitude, which of the following is true?
Answer: Sound waves with large amplitudes have more energy and sound louder. |
Question: Vinegar and water are placed in a container and stirred. What is formed when they are mixed?
Answer: solution |
Question: Which of the following best describes the climate of an area?
Answer: the average temperature and total precipitation each month for ten years |
Question: Salt and pepper are placed together in a container. When the container is shaken, the salt and pepper become a
Answer: mixture. |
Question: All natural resources on Earth are either renewable or nonrenewable. Whether a resource is renewable or nonrenewable depends on how fast or slow the resource is replaced. If the resource is used faster than it is replaced, then the resource will, in time, disappear. Which statement describes the use of a renewable natural resource?
Answer: A farmer plants different types of crops to protect the soil. |
Question: Which of the following statements best explains why earthquakes occur more frequently in California than in Massachusetts?
Answer: California is located on the boundary of two crustal plates, but Massachusetts is not. |
Question: Which of these describes a chemical change?
Answer: paper burning |
Question: A large tree was cut down with a saw. What is the best way to estimate the age of this tree?
Answer: count the number of rings in the trunk |
Question: From smallest to largest, the levels of organization in living things are
Answer: cells, tissues, organs, organ systems. |
Question: Which object is nonliving?
Answer: bicycle |
Question: What happens when oil and water are mixed?
Answer: The oil and water remain separate. |
Question: Students measure the time for toy cars of different masses to roll down a hill. Which of the following units should the students use to measure time?
Answer: seconds |
Question: A homeowner wants to use a renewable resource to heat the home. Which resource would be the best to use?
Answer: solar |
Question: Which of the following animal features most helps the animal move around in its habitat?
Answer: A sea turtle's flippers |
Question: A student observes cells in an object by using a microscope. The student thinks that the object was part of a living thing. Which statement explains why cell theory can be used to support the student's thinking?
Answer: Cell theory states that all living things are made of cells. |
Question: A researcher observes that an organism placed in a glass container filled with water moves away when a penlight is focused on the container. The researcher concludes that the organism is light sensitive. Which other explanation for the organism's response to the light is most possible?
Answer: The organism moves away from heat sources. |
Question: Which behavior is an example of an animal adapting to a change in the environment?
Answer: a bird migrating south |
Question: Mitochondria are cell organelles that play a large role in energy processes within the body. Which cells are most likely to have a greater amount of mitochondria?
Answer: muscle |
Question: Which would be the best method to use to dispose of cardboard boxes not utilized by a local grocery store?
Answer: have them recycled for future paper products |
Question: Which item is used for protection from chemical splashing?
Answer: safety goggles |
Question: Which processes change magma into igneous rock?
Answer: cooling and crystallization |
Question: Sophie investigates the water supply at her school and the things that affect it. Which action is a direct observation?
Answer: tasting water from a water fountain |
Question: Two identical books are on opposite ends of a table. Which of these would increase the gravitational force exerted between the two books?
Answer: decrease the distance between the books |
Question: When a guitar string is plucked, sound is produced by
Answer: the vibrations of the string. |
Question: What is the role of chlorophyll in photosynthesis?
Answer: absorbing light energy |
Question: Which tool should a student use to compare the masses of two small rocks?
Answer: balance |
Question: Which is an example of a chemical reaction?
Answer: Vinegar added to baking soda forms a gas. |
Question: Which type of evidence would a geologist need to support plate tectonic theory?
Answer: new crust formed by the sea floor spreading |
Question: An example of a learned trait is
Answer: being able to read |
Question: Angelo wants to know if the volume of water changes when it freezes. He measures the volume of water in its liquid state and then freezes it. Which tool did Angelo most likely use to measure the volume of the water?
Answer: a graduated cylinder |
Question: In order for a glider to fly, its weight must be opposed by
Answer: lift. |
Question: Why does the leaf of a plant look green?
Answer: Because it reflects green light |
Question: Which statement best describes the nature of sound?
Answer: Sound travels as longitudinal waves. |
Question: Which of these provides most of the oxygen in Earth's atmosphere?
Answer: ocean phytoplankton |
Question: A solution of lead (II) nitrate reacts with a solution of sodium iodide to produce a yellow solid of lead (II) iodide and aqueous sodium nitrate. Which of these illustrates the reaction?
Answer: Pb(NO_{3})_{2}(aq) + 2NaI(aq) -> PbI_{2}(s) + 2NaNO_{3}(aq) |
Question: A meteoroid becomes a meteorite when it
Answer: impacts the surface of a planet. |
Question: Which force causes rocks to roll downhill?
Answer: gravity |
Question: Infectious diseases are caused by
Answer: microorganisms |
Question: A water wave that occurs in an ocean is an example of which type of wave?
Answer: transverse |
Question: Which of the following is an example of how insects are beneficial to humans?
Answer: Insects pollinate flowering plants. |
Question: In a closed system, what happens to the total energy of the system as energy conversions take place?
Answer: It remains constant. |
Question: Which of these organisms is a producer in a marine ecosystem?
Answer: algae |
Question: Which of the following describes a reason why companies irradiate some fruits and vegetables before they are sold to the public?
Answer: to extend the shelf life by killing existing microorganisms |
Question: A glacier is a slow moving river of ice. How does a glacier help create soil?
Answer: It scrapes small particles off large rocks. |
Question: During winter months, Amina sometimes notices ice covering the hoods of parked cars. Once the engine of the car runs for a while, the ice on the hood begins to melt. What form of energy is released from the car engine to melt the ice?
Answer: heat |
Question: A student notices dogs have more fleas in the summer than in the winter. Based on these observations, which is the most logical question for the student to investigate?
Answer: How does temperature affect the amount of fleas on dogs? |
Question: According to the periodic table, all of the following are metals except
Answer: fluorine |
Question: A squid is an animal that lives in the ocean. It pumps a stream of water out of its body, causing it to move rapidly. Which of the following mechanical systems moves in a way most similar to the squid?
Answer: a rocket |
Question: When the wax from a candle drips, the wax has reached
Answer: its melting point. |
Question: In the morning, students observed puddles of water all over the playground. What would best explain why the playground was dry in the afternoon?
Answer: The water evaporated during the day. |
Question: Many areas of Massachusetts have small deep ponds called kettle ponds. Which of the following best explains the formation of these ponds?
Answer: glacial depression |
Question: What relationship exists between a dog and its fleas?
Answer: parasitism |
Question: Which of the following could limit the supply of a renewable resource?
Answer: cutting down trees in forests |
Question: Which statement best describes the energy transformations that occur when a candle burns?
Answer: Chemical energy from the wax is converted into light and heat energy. |
Question: Pesticides and fertilizers can help farmers to produce more crops. However, overuse of these chemicals can result in
Answer: environmental pollution |
Question: What type of energy travels through the body of a microscope that allows the specimen to be seen by a student?
Answer: light |
Question: A powder made up of both white specks and black specks is likely to be
Answer: a mixture |
Question: In the past, wild hogs called "javelinas" were seen only in the southern part of New Mexico. Now, javelinas are seen in areas 100 miles further north. What is the most likely cause of this expansion?
Answer: Environmental conditions have changed. |
Question: Which is the best example of a pure substance?
Answer: gold |
Question: Which tool would best help a person observe the parts of a plant cell?
Answer: microscope |
Question: The energy stored in the bonds of a glucose molecule during photosynthesis is in what form?
Answer: chemical |
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