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Question: Which step will most likely ensure that the results of an investigation are valid?
Answer: comparing the results with those of other scientists |
Question: What is formed when a sodium atom and chlorine atom react chemically?
Answer: a compound |
Question: Which of these is an example of an endothermic process?
Answer: first-aid instant cold pack |
Question: The distance from Earth to the Sun is about 150,000,000 km. What abbreviation do scientists use to describe this distance?
Answer: astronomical unit (AU) |
Question: In New York State, the longest period of daylight occurs during which month?
Answer: June |
Question: Which trait does a puppy inherit from its parents?
Answer: fur color and pattern |
Question: Which material is most easily recycled at school?
Answer: notebook paper |
Question: Plants make sugars in the presence of sunlight in a process called photosynthesis. What form of carbon do the plants take in for this process?
Answer: carbon dioxide |
Question: The sun is a star of average size and brightness. From Earth, the sun appears as a round, yellow object in the daytime sky. At night, we see other stars. They appear as tiny points of light. Why does the sun appear larger than stars that we see at night?
Answer: The sun is closer to Earth than other stars, making the sun appear larger. |
Question: A drain cleaner consists of sodium hydroxide and aluminum. When the drain cleaner is added to water, bubbles of hydrogen are produced, and the solution becomes very hot. Which of these best describes what happens to form the bubbles when the cleaner is added to water? F
Answer: chemical reaction |
Question: John has diabetes. Which of the following should he be careful about eating or drinking?
Answer: fruit juice |
Question: Within a substance, atoms that collide frequently and move independently of one another are most likely in a
Answer: gas. |
Question: Which object best reflects light?
Answer: white floor |
Question: The gravitational attraction of the Moon causes which effect on Earth?
Answer: ocean tides |
Question: A forest was cleared for the building of a resort, but before construction began, secondary succession set in. Which of these describes why secondary succession appeared so rapidly?
Answer: The soil components remained for plants to grow. |
Question: Which object is made to reflect light?
Answer: mirror |
Question: A car may produce many forms of energy from the fuel it uses. Which indicates that a car does not use fuel with 100% efficiency?
Answer: The car engine gets hot. |
Question: After nitrogen becomes part of the lithosphere, what is the next change that nitrogen will undergo?
Answer: fixed by bacteria in the soil |
Question: Which of the following would be more likely to pollute a river?
Answer: spreading fertilizer near the river |
Question: For two organisms to be classified as the same species, they must produce offspring that are
Answer: fertile. |
Question: Which sentence best describes the organization of the heart?
Answer: The heart is an organ made up of different types of tissues, each of which has different types of cells. |
Question: Which stage in the reptile life cycle is most like the birth of a lion cub?
Answer: hatching from an egg |
Question: What would be the best way to determine the role of squirrels in a forest ecosystem?
Answer: make field observations of squirrels in their natural habitat |
Question: Which of the following systems breaks food into nutrients that can be used by the body?
Answer: digestive |
Question: Barry collected four different rocks. The rock with the GREATEST mass will feel the ___.
Answer: heaviest |
Question: Which of the following is not an inherited trait of humans?
Answer: favorite food |
Question: When a person chews, saliva from the mouth mixes with starches in food. These starches begin to turn into sugars. Changing starches into sugars is best described as
Answer: a chemical change. |
Question: Which of these renewable resources results in an increase in pollution when used to produce energy?
Answer: biomass |
Question: Granite is an igneous rock. Which of these describes what usually happens to granite after it is weathered, broken into small particles, buried deep underground, and compacted?
Answer: The granite becomes a new rock type. |
Question: The features below are all present on Earth. Which feature could also be found on the Moon?
Answer: crater |
Question: What is the highest temperature that water can reach in a pot on a stove?
Answer: 100°C |
Question: In 2004 the Hubble space telescope captured images of distant star clusters, each containing about a million stars. These star clusters were most likely part of which structure?
Answer: a galaxy |
Question: Where is most of the mass of the atom located?
Answer: in the nucleus |
Question: Which situation is the best example of ecological succession?
Answer: One species replaces another species in an ecosystem. |
Question: The BEST way to tell the DIFFERENCE between an oak and a maple tree is to compare the
Answer: shape of the leaves. |
Question: Which example describes a learned behavior in a dog?
Answer: sitting on command |
Question: In a lab investigation, a student notes that two metal blocks have the same mass. Based on this observation, if the two blocks were put on opposite sides of a balance, they would best represent
Answer: balanced forces. |
Question: A scientist was investigating why several fish caught from a local stream displayed similar mutations. He found that the water temperature of the stream was elevated since an industrial plant began discharging heated water into the stream. The scientist concluded that increased water temperature during the egg phase led to the mutation in the fish. According to this conclusion, the mutation was caused by
Answer: an environmental condition. |
Question: Solar radiation has a part in the water cycle by
Answer: changing water to a vapor. |
Question: A student sets a block at the top of a wooden ramp. The student pushes the block. As the block slides down the ramp, it slows down and then comes to a stop. What force causes the block to slow down?
Answer: the force of friction |
Question: Which of these explains how a trench can form?
Answer: two oceanic plates converging |
Question: Pepsin is an enzyme that acts in the stomach for protein digestion. Which of these is most likely the main role of pepsin in this metabolic reaction?
Answer: to speed up the rate of reaction |
Question: Sodium chloride, commonly called "table salt," is made up of sodium and chlorine that have been combined chemically. Which term best describes sodium chloride?
Answer: Compound |
Question: Katia was listening to music on the radio. In order for the sound to be produced, the electrical energy must be converted into which type of energy?
Answer: mechanical energy |
Question: Studies of snail fossils in Egypt indicate that areas of Egypt that are now desert were once thriving savannahs approximately 130,000 years ago. What does the presence of these fossils indicate about the area of Egypt that was thriving 130,000 years ago?
Answer: There was more humidity in the air. |
Question: Which statement identifies an energy source as renewable?
Answer: Wind, because it is always available. |
Question: A wet towel will dry when it is left in the Sun. Which process occurs to make this happen?
Answer: evaporation |
Question: Otto pushed a toy car across a floor. The car traveled fast across the wood, but it slowed to a stop on the carpet. Which best explains what happened when the car reached the carpet?
Answer: Friction increased. |
Question: Eye color is a physical trait. Which statement best explains why a child has a specific eye color?
Answer: Eye color is an inherited trait. |
Question: Manganese has an atomic number of 25 and an atomic mass of 55 amu. How many particles are found in its nucleus?
Answer: 55 |
Question: Students researched monkeys at a zoo. They recorded the monkeys' traits and behaviors. This investigation activity is best described as
Answer: observing. |
Question: The fur of an arctic fox turns from brown to white as winter approaches. This is an example of
Answer: camouflage |
Question: Which is an example of a chemical change?
Answer: a rusting car fender |
Question: Which statement is describing climate?
Answer: Last winter was colder than normal. |
Question: Scientists have categorized trees based on whether they keep or lose their leaves each year. Another logical way to categorize trees is based on the
Answer: type of fruit that is produced. |
Question: Which resource is considered nonrenewable?
Answer: fossil fuels |
Question: Sand and iron particles that are similar in size and color are mixed together in a beaker. What would be the best method of separating the particles?
Answer: Use a magnet to separate them. |
Question: Which habitat on Earth would probably 28 add the greatest amount of water to the water cycle through evaporation?
Answer: warm ocean |
Question: Which of these actions will change a sedimentary rock, such as limestone, into a metamorphic rock, such as marble?
Answer: heat from magma |
Question: A loaf of bread is baking in a pan in a 350° F oven. What would cause a burn to a hand the quickest because of its low specific heat?
Answer: the metal pan |
Question: A student poured some sugar into a glass of water. After the water was stirred, no solid sugar remained in the glass. Which statement best describes what happened?
Answer: The sugar dissolved in water to form a solution. |
Question: The magnitude of the gravitational force between two planets depends on the
Answer: distance between the planets. |
Question: The fossils that are found in the oldest layers of sedimentary rock were formed which types of organisms?
Answer: only organisms that lived in the sea |
Question: A snail's shell provides the snail with
Answer: protection. |
Question: Since green plants make their own food, they are called
Answer: producers |
Question: Which metalloid is used in solar cells and computer chips?
Answer: silicon |
Question: The best evidence that two land areas were once connected is the discovery that both land masses
Answer: have similar types of rocks and fossils. |
Question: Rachel purchased a kit for making a skateboard ramp. Which of the following is most important to have for putting the ramp together?
Answer: a set of instructions for the kit materials |
Question: What is the smallest particle of the element gold (Au) that can still be classified as gold?
Answer: atom |
Question: Which best describes the function of the small intestine?
Answer: digestion and absorption of food |
Question: A forest is flooded when a natural dam breaks, leaving the forest floor under two meters of water. Which animal is most affected by the flooding?
Answer: a rabbit |
Question: Which object will most likely be attracted to a magnet?
Answer: metal nail |
Question: At what temperature does pure water boil?
Answer: 100°C |
Question: Animals that eat both plant matter and meat are referred to as
Answer: omnivores. |
Question: Corals are animals that live in tropical oceans. Fossils of corals are found in Ohio. What does the presence of coral fossils suggest about how the environment of Ohio has changed over time?
Answer: Ohio was once covered by warm seas. |
Question: Alex looked at an electric toothbrush that had a plug with three metal prongs. Why are these prongs made out of metal?
Answer: Metal is a conductor and completes a circuit when you plug it into the outlet. |
Question: Where is an igneous rock such as pumice most likely formed?
Answer: near a volcano |
Question: Why are many telescopes used far from cities?
Answer: The light from the cities makes it hard to see stars. |
Question: Where do plants get energy from to make food?
Answer: sunlight |
Question: Which of the following is most likely to cause water to change from one state of matter to another state of matter?
Answer: a change in air temperature |
Question: When a soccer player kicks a ball, which two systems work directly with the muscular system?
Answer: nervous and skeletal |
Question: Which two activities are carried out by all species of living things?
Answer: grow and reproduce |
Question: Which best explains why a person infected with bacteria may have a fever?
Answer: The body is responding to fight off the bacteria. |
Question: Most of the concentration of which gas results from the activity of producer organisms?
Answer: oxygen |
Question: What is determined by the speed that Earth rotates on its axis?
Answer: the length of a day |
Question: The spectrum of visible light can be seen in a rainbow because white light is
Answer: refracted and dispersed. |
Question: Kate sees a full moon. About how much time will go by before the next full moon?
Answer: one month |
Question: The sediments found in a riverbed are most likely a result of which action on nearby rock?
Answer: weathering |
Question: The most common way humans contribute to the extinction of organisms is by
Answer: destruction of habitat. |
Question: Which of the following is an example of matter changing state?
Answer: heating a pan of water until the water is all gone |
Question: A car runs out of fuel while traveling on a level road and eventually comes to a stop. Which of the following best explains why the car stops?
Answer: Some of the energy of the car was lost to friction. |
Question: Which of the following best represents one particular stage in a life cycle?
Answer: a seed sprouting |
Question: Which process of the water cycle transports water from plants to clouds?
Answer: transpiration |
Question: Sulfur scrubbers are devices installed in coal-fired power plants. Sulfur scrubbers reduce the emission of sulfur dioxide. What environmental problem are sulfur scrubbers most likely trying to address?
Answer: acid rain |
Question: Which system of the human body provides protection to most of the major organs?
Answer: skeletal system |
Question: A scientist developed a model that described the actions of DNA in the cell nuclei, which helped explain how traits were inherited. Which scientist helped develop this model?
Answer: Watson |
Question: Which item is designed to change electrical energy into heat energy?
Answer: Hand dryer |
Question: Which characteristic is the best example of an inherited trait?
Answer: eye color |
Question: Which correctly arranges three scientific terms-theory, law, and hypothesis-from least to most accepted or tested?
Answer: hypothesis, theory, law |
Question: The metal lid on a glass jar is hard to open, so it is held under warm, running water. What causes the jar to open easily after it was held under the water?
Answer: The metal lid expanded under warm water. |
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