Nature of Science
Life Science
Physical Science
Earth and Space
Random
100
Elizabeth wanted to know how fast the sun heats water. She put bowls of water in the sunlight. Then she recorded the temperature of the water in the bowls every 15 minutes for 3 hours. When she recorded the temperatures, what part of a scientific investigation did Elizabeth do?
A. stated an opinion
B. collected evidence
C. made a prediction
D. drew a conclusion
B. collected evidence
100
Kelly drew the picture below of a plant. Which plant part produces food that the plant uses for energy?
A. Part A
B. Part B
C. Part C
D. Part D
A. Part A
100
Which of the following best describes a liquid?
A. It has soft atoms
B. It has is own shape
C. It takes the shape of its container
D. It takes the volume of its container
C. It takes the shape of its container
100
Brandon has learned that many stars are actually larger than the Sun. If this is true, why do these stars appear like points of light in the sky?
A. These stars are hotter than the Sun.
B. These stars have less mass than the Sun.
C. These stars are farther away from Earth than the Sun is.
D. These stars are made of different chemicals than the Sun.
C. These stars are farther away from Earth than the Sun is.
100
Cullen conducted an experiment with vegetable oil and water. He wanted to determine which one would evaporate the quickest. After two hours all of the water that he placed in the dish had evaporated. Ayden wanted to duplicate the experiment. What should Ayden expect after two hours if he conducts the exact same experiment?
A. The water will completely evaporate
B. Some of the water will evaporate
C. The oil will completely evaporate
D. Some of the oil will evaporate
A. The water will completely evaporate
200
Although scientific experiments and investigations can be very different, they all start the same way. Which of these would you do first in a scientific experiment or investigation?
A. Draw a conclusion
B. Write a hypothesis
C. Form a question or problem
D. Organize data in tables and charts
C. Form a question or problem
200
Which stage of the life cycle will happen next after the seeds are planted in the dirt and watered?
A. They become flowers
B. They become seedlings
C. They become cucumbers
D. They wither and die.
B. They become seedlings
200
What is the best example of an energy change that takes place in a ceiling fan?
A. Electrical energy changes to light
B. Electrical energy changes to motion
C. Mechanical energy changes to friction
D. Sound energy changes to electrical energy
B. Electrical energy changes to motion
200
Which of the following must happen to water in order for it to evaporate off the surface of lakes and oceans during the water cycle?
A. The wter must be in motion to start the process of evaporation
B. The Sun must warm the water enough so that some water molecules turn to gas.
C. The movement of the wind must be strong enough to pull small water drops into the air.
D. The water temperature must decrease enough to cause some water molecules to turn into gas.
B. The Sun must warm the water enough so that some water molecules turn to gas.
200
One morning, Ryan noticed there were tiny drops of water on the grass as he walked to school. That afternoon, he did not see any drops of water on the grass when he returned home. Which of the following best explains what happened to the drops of water?
A. The heat from the air caused the water drops to boil.
B. The air cooled the water and caused the drops to freeze
C. The Sun heated the water and caused the drops to evaporate
D. The energy from the Sun caused the water drops to condense.
C. The Sun heated the water and caused the drops to evaporate
300
Experiments often involve both observations and inferences. Georgia plotted the results of a speed experiment she did. Look closely at the graph she drew. At what time must Georgia make an inference about the distance the object traveled?
A. 1 min
B. 2 min
C. 5 min
D. 6 min
D. 6 min
300
Miguel and Tina were studying phototropism and decided to do an experiment. They placed a young plant at one end of a cardboard box.At the other end of the box, they cut a small hole. They taped walls inside the box to partially block the path of light from the hole to the plant. Their setup is shown.Miguel and Tina pointed a lamp at the box and closed the lid. After several days, they opened the box and observed the plant.What were Miguel and Tina most likely trying to discover from their experiment?
A. how a plant can absorb light through cardboard
B. how a plant can survive when its environment changes
C. how a plant's growth inside a box differs from its growth in a forest
D. how a plant's growth using artificial light differs from its growth using sunlight
B. how a plant can survive when its environment changes
300
Which form of energy involves vibrations?
A. electrical
B. heat
C. mechanical
D. sound
C. sound
300
Deserts in the temperate zones can be extremely hot in the afternoon and below freezing at night. Which answer best explains why this happens?
A. Temperate deserts are found at high elevations, where the Sun and the wind are much stronger. This creates more extreme temperature changes.
B. Temperate deserts lack trees and grass. With no trees, the Sun shines directly down and causes it to get hot in the day, and with no grass, the heat escapes at night.
C. Temperate deserts have very little cloud cover and no humidity. This means that more energy from the Sun reaches the desert in the day, but that heat can escape quickly at night.
D. Temperate deserts have higher rainfall than other kinds of deserts. Warm rain during the day produces warm breezes in the desert. Cooler rains at night draw warm air away from the desert.
C. Temperate deserts have very little cloud cover and no humidity. This means that more energy from the Sun reaches the desert in the day, but that heat can escape quickly at night.
300
Earth revolves around the sun. Look closely at the illustration below, which shows Earth revolving around the sun.How long will it take for Earth to travel between the two points shown in this illustration?
A. one week
B. one month
C. six months
D. twelve months
C. six months
400
A student wants to see if music helps people memorize words. Group 1 listens to rock music while studying. Group 2 listens to classical music. Group 3 studies in silence. Which group is the control group?
A. Group 1
B. Group 2
C. Group 3
D. All of them
C. Group 3
400
Many animals hibernate during the winter. Hibernation is a period of very little activity. How does hibernation help an animal survive?
A. it helps the animal gain weight for summer
B. it helps the animal find food when food is scarce
C. it helps the animal need less food when food is scarce
D. it helps the animal catch up on rest that it did not get during summer
C. it helps the animal need less food when food is scarce.
400
The birds are flying up into the air. Which force are the birds most strongly trying to overcome?
A. friction
B. gravity
C. inertia
D. pushes
B. gravity
400
Hardness is a property that describes how hard or soft a mineral is. To test materials for hardness, a scientist will see whether they can be scratched or dented. A very hard material will leave a scratch on a softer material. Which sentence describes the hardness of a material.
A. Sandpaper is rough
B. Diamonds can cut glass
C. Copper is shiny and brown
D. Salt crystals have a cube shape
B. Diamonds can cut glass
400
Pine trees have needle-shaped leaves, stay green all year long,and develop cones to spread their seeds. How is a pine tree classified?
A. conifer
B. flowering
C. grass
D. pollinator
A. conifer
500
A student states, "I saw three different species of birds at the feeder today." Another student says, "Those birds were much prettier than the ones we saw yesterday."
Which statement is a verified observation?
A. The first student's statement about the number of species
B. The second student's statement about how pretty they were.
C. Both statements are verified observations
D. Neither statement is scientific
A. The first student's statement about the number of species
500
Most animals that are born on land live on land, and most animals that are born in water live in water. What animal group begins life in water and moves later to live on land?
A. amphibians
B. fish
C. mammals
D. reptiles
A amphibians
500
Why do objects fall more slowly on the moon than they do on Earth?
A. The pull of gravity is not as strong on the Moon
B. Objects do not have as much mass on the Moon
C. The volume of an object decreases on the Moon
D. There is a different scale of measurement on the Moon
A. The pull of gravity is not as strong on the Moon.
500
Molten rock is called magma. The illustration below shows how magma can rise to Earth’s surface. As it cools, magma turns into solid rock on the surface. What type of rock does magma form as it cools?
A. igneous
B. metamorphic
C. sedimentary
D. fossil
A. igneous
500
Which feature is common to all vertebrates?
A. two legs
B. five fingers
C. internal skeleton
D. hard exoskeleton
C. internal skeleton