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Question: A baby kit fox grows to become an adult with a mass of over 3.5 kg. What factor will have the greatest influence on this kit fox's survival?
Answer: the conditions of the fox's habitat |
Question: Hydrochloric acid is added to a beaker containing a piece of zinc. As a result, zinc chloride is formed and hydrogen gas is released. This is an example of
Answer: a chemical reaction |
Question: Which part of a plant produces the seeds?
Answer: flower |
Question: Which of the following is found in all living organisms?
Answer: cell |
Question: What is the role of decomposers in a food chain?
Answer: They break down dead organic matter. |
Question: Copernicus changed the way people viewed the solar system by
Answer: claiming Earth is in orbit about the Sun. |
Question: Which part of the electromagnetic spectrum can humans sense without using equipment or technology?
Answer: visible light |
Question: The nervous system is composed of cells, tissues, and organs. Which is a cell of the nervous system?
Answer: neuron |
Question: A shallow container of salt water is placed in sunlight for a day. Which is the most likely result?
Answer: Only the water will evaporate and the salt will remain in the container. |
Question: Which of these will best separate a saltwater solution?
Answer: allowing the water to evaporate |
Question: Mrs. Henderson's class has five small, covered boxes. One contains perfume; another contains dried onions. There is also a box of pine needles, a box of lemon pieces, and a box with a paper towel wet with vanilla flavoring. Which should they do to get the best information about what is in each box?
Answer: Smell the boxes. |
Question: Which features are physical properties of an iron nail?
Answer: conducts heat, magnetic, solid |
Question: Which item would a magnet attract?
Answer: iron nail |
Question: Which human activity is most harmful to the natural environment?
Answer: cutting down a rain forest |
Question: The process of digestion breaks down proteins into smaller molecules that are used to rebuild other proteins. During digestion, proteins undergo
Answer: chemical changes. |
Question: Blood is composed of different cell types that transport nutrients and wastes throughout the body. Because of this, blood is classified as
Answer: a tissue. |
Question: What should a student do when a glass beaker shatters during a laboratory experiment?
Answer: Notify the teacher. |
Question: An astronomical unit (AU) refers to the distance between
Answer: Earth and the Sun. |
Question: An organ pipe produces a musical note same number of nitrogen gas molecules. with a wavelength of 2.72 m. What is the frequency of this note if the speed of sound is 348 m/s?
Answer: 128 Hz |
Question: Which of the following allows the planets to stay in orbit?
Answer: the Sun's gravity |
Question: Which of these involves the formation of a new chemical substance?
Answer: rusting of an iron chain |
Question: Water causes weathering when it
Answer: erodes rock in its path. |
Question: Which of these statements about nonrenewable resources is true?
Answer: They can take millions of years to form. |
Question: Which statement best identifies a living thing that depends on another living thing to survive?
Answer: A moose eats a plant. |
Question: A student is playing with a small toy boat on a pond. The student throws a rock in the pond. This creates waves that move the boat toward the shore. The boat moves toward the shore because the waves transfer
Answer: energy. |
Question: A geologist finds a layer of shale near the surface from a certain time period. Nearby, the geologist finds the same layer of shale, but it is deeper underground than the first layer. What might have caused the difference in the depth of the shale layer?
Answer: a fault |
Question: The pull of gravity on Earth is caused by
Answer: the mass of Earth. |
Question: In which type of rock are fossils generally found?
Answer: sedimentary |
Question: Structural geologists study rock formations to determine the type of environment in which the rocks formed and the events that shaped the rocks. Paleontologists study fossils found in rock formations. Scientists in both these fields have a common interest in discovering the
Answer: history and processes of Earth. |
Question: A simple machine that helps move a flag up a flagpole is
Answer: a pulley |
Question: Which cellular structure allows nutrients to pass into cells?
Answer: membrane |
Question: An example of a renewable resource is
Answer: wood. |
Question: Minerals are formed by which process?
Answer: magma cooling |
Question: Which of these best defines the term "pollutant"?
Answer: any substance that is harmful to the environment |
Question: The periodic table of the elements is systematically organized according to the
Answer: structure of the atoms of the elements. |
Question: Which human body system produces the hormones that regulate growth?
Answer: endocrine |
Question: Repeated exposure to extremely loud sounds can reduce hearing ability by direct damage to which structures?
Answer: the sensory neurons in the ears |
Question: What does a mirror do to light that causes objects to appear backwards?
Answer: reflects |
Question: The formation of the mineral halite is most likely to occur by which process?
Answer: the evaporation of seawater |
Question: A student wants to design an experiment regarding the behavior of crickets. Which is the best question to ask to begin the experiment?
Answer: Do crickets chirp more during the day or at night? |
Question: Decomposers are organisms that eat and break down dead plant and animal material. Which organism is a decomposer?
Answer: bacteria |
Question: An area received six inches of snow during the winter. Before the snow can continue through the water cycle as ground water or runoff, it must first ___.
Answer: melt |
Question: New vaccines for diseases are being developed all the time. How do vaccines most likely help people?
Answer: Vaccines help prevent illnesses. |
Question: The cell cycle describes the processes that take place as a cell
Answer: forms new cells. |
Question: A company that makes fences started using a new material instead of wood. The new material will last longer than wood. What is the most likely benefit of the new material?
Answer: The new material can save money on replacements. |
Question: Which best explains how the Appalachian Mountains formed?
Answer: tectonic plates collided |
Question: Which is a source of sound?
Answer: a vibration |
Question: Which natural material is best for making a table?
Answer: wood that is sturdy |
Question: A class is studying textures and collects several samples. Which of these items would the students most likely use magnification to study?
Answer: hair |
Question: Over several years, a scientist successfully isolates a species of flower for white color. This year, when the new generation of flowers blooms, one yellow flower is found in the population. Which is the best reason for the appearance of a new flower color within the species?
Answer: genetic mutation |
Question: What type of precipitation occurs when raindrops freeze as they fall?
Answer: sleet |
Question: In the atomic model that includes a nucleus, the positive charge is
Answer: concentrated in the center of the model. |
Question: A student used two long wires to connect a lightbulb to a battery. The student noticed that as soon as the circuit was complete, a nearby compass started to point in a direction other than north. The compass pointed in a different direction because it was reacting to the
Answer: magnetic field produced by the electric current. |
Question: The production of sweat is typically a response to an increase in the body's
Answer: temperature. |
Question: Which of the following converts electrical energy into motion?
Answer: electric fan |
Question: What happens at the boiling point of a substance?
Answer: liquid becomes a gas |
Question: How do producers get energy?
Answer: using the sun to make food |
Question: In an investigation, a student wants to see how a ball is affected by rolling it over a surface covered with sandpaper. In preparation for the trial, the student makes a list of the possible conditions that could affect the investigation. The student is most likely listing the
Answer: variables. |
Question: If two organisms are classified in different orders but are in the same class, which of these statements is true?
Answer: The organisms are in the same phylum. |
Question: Why do mountain climbers at high elevations use oxygen tanks to help them breathe?
Answer: The atmosphere is less dense at higher elevations so there is less oxygen available. |
Question: The students were told that the net applied force from the engine was the same for each vehicle tested. Based on this information, which vehicle had the greatest acceleration (a = F/m)?
Answer: vehicle 1 |
Question: Which metric unit is used to describe an object's length?
Answer: centimeter (cm) |
Question: Which is a process that occurs during photosynthesis?
Answer: Plants take in carbon dioxide and release oxygen. |
Question: The work of which scientist serves as the basis for many procedures used in agriculture, such as selective breeding of plants?
Answer: Mendel |
Question: A student is investigating which type of soil is best for growing tomato plants from seeds. The student plants four tomato seeds in each of three different containers of soil. Which step of the procedure would help the student get the most reliable results?
Answer: Change only the soil type in each container. |
Question: In many caves, rock formations include stalactites and stalagmites. Where does the rock in these formations come from?
Answer: dissolved minerals |
Question: A person named Leonardo da Vinci studied many things including animals, geology, clouds, and flight. His study of birds helped him design the first parachute. Everything he saw made him ask how and why. Which human quality most likely made this person want to study many different things?
Answer: curiosity |
Question: What is the main reason we can see the Moon?
Answer: The Moon reflects the light from the Sun. |
Question: Which of these events have the most influence on regional climate?
Answer: ocean trade winds |
Question: If a scientist wants the medical community to revise old information and use new research findings in the treatment of a disease, it would be best to present the information
Answer: at a physicians' conference. |
Question: David planted ten corn seeds in sandy soil and ten corn seeds in clay soil. He kept both groups of plants at room temperature, gave them the same amount of water, and placed them all in the same sunny room. Which of the following questions is David most able to answer with his experiment?
Answer: Do corn plants grow better in sandy soil or in clay soil? |
Question: Which geologic feature most likely forms when an oceanic tectonic plate is slowly subducted beneath a continental tectonic plate?
Answer: ocean trench |
Question: A glacier retreats leaving bare rocks. Lichens begin to live on the rocks. The lichens produce an acid that starts to break down the rocks. How will this process affect the environment?
Answer: It will begin the process of building soil. |
Question: During protein synthesis, mRNA is translated into three-base sequences representing amino acids. What signals the ribosome to begin translating the mRNA into a new amino acid sequence?
Answer: a codon |
Question: Phobos is one of two large objects that orbit the planet Mars. Because Phobos orbits Mars, Phobos should be classified as which type of body?
Answer: moon |
Question: Water at 20°C in an uncovered pan is evaporating very slowly. What could be done to the water to make it evaporate more quickly?
Answer: Heat it. |
Question: Which rapid changes are caused by heat from inside Earth?
Answer: volcanoes |
Question: Which tool is most responsible for preventing future pandemics of smallpox?
Answer: worldwide vaccination for smallpox |
Question: After which event will ecological succession most likely happen?
Answer: a forest fire |
Question: Sir Isaac Newton determined that white light is made up of all the colors of the rainbow. What did he use to discover this phenomenon?
Answer: a prism |
Question: Which characteristic is most common among animals living in a cold climate?
Answer: layers of fat |
Question: Species are classified based on their characteristics. Which characteristic identifies two organisms as members of one species? The organisms
Answer: can produce fertile offspring. |
Question: A student hypothesizes that the amount of water a plant receives will affect how long it grows before reaching maturity. To test this hypothesis, the student will need
Answer: several identical plant seeds. |
Question: One example of matter is
Answer: water |
Question: If a classroom experiment involves the use of several unidentified chemical solutions, which factor would be most important in maintaining safety during the experiment?
Answer: The classroom would have good ventilation. |
Question: Vein deposits of gold and silver are often formed in areas that have experienced which geologic process?
Answer: igneous intrusion |
Question: Cells that conduct messages are known as
Answer: nerve cells |
Question: The boiling of water results in a physical change in matter from
Answer: liquid to gas. |
Question: What do playing a guitar, banging a drum, and dropping a pebble in the water have in common?
Answer: They all cause vibrations. |
Question: Which object below is gaining stored energy?
Answer: A rubber band that is being stretched |
Question: At room temperature, what state of matter is copper?
Answer: solid |
Question: All of the following events occur during prophase in mitosis except
Answer: crossing over. |
Question: A seed of a plant sticks to the fur of an animal as it walks by. How has the animal most likely helped the plant?
Answer: by spreading the seed |
Question: Which part of a plant is used to absorb sunlight during photosynthesis?
Answer: leaf |
Question: You wish to closely observe a small insect. Which tool is the best to use?
Answer: a magnifying glass |
Question: The interaction of the skeletal and muscular systems to produce locomotion is coordinated by which human body system?
Answer: nervous |
Question: A student flips a coin four times. It lands "heads" up three times. The student concludes that the coin will land "heads" up three times out of four. What will make the conclusion more accurate?
Answer: flipping the coin twenty more times |
Question: Which mineral has six-sided transparent crystals that will scratch glass?
Answer: quartz |
Question: Which best describes a proton?
Answer: positively charged and part of the nucleus |
Question: The difference between the atomic number of an element and the element's atomic mass is the number of
Answer: neutrons. |
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