Show:
Life Science
Physical Science
Earth Science
Science Concepts
Everything Else
100
What type of tissue is attached to the skeletal system and helps bones move?
What is F. Muscle tissue G. Cardiac tissue H. Adipose tissue J. Epithelial tissue
100
A mixture of sand, salt, and iron filings is stirred into a beaker of water. The mixture is then allowed to settle. What will separate the iron filings from the mixture?
F. Magnetism G. Filtration H. Flotation J. Sifting
100
Where is most of Earth’s freshwater?
A. In the ground B. In the atmosphere C. In lakes and rivers D. In glaciers and icecaps
100
Which tool should be used to measure the amount of water vapor in the air?
F. Anemometer G. Barometer H. Hygrometer J. Thermometer
100
Dylan decided to make soup using the following steps: 1) Chop up celery and carrots. 2) Open a can of chicken broth. 3) Fill a pot with the broth, noodles, and the vegetables. 4) Place the pot on the gas stove and turn on the burner. Which of these represents a chemical change?
F. Burning the gas G. Opening the can of broth H. Chopping up the vegetables J. Filling the pot with the ingredients
200
Which structure is the direct result of sexual reproduction?
A. Cone B. Flower C. Seed D. Spore
200
Which is an example of a chemical change?
What is F. Milk cooling in a refrigerator G. Pouring milk into a glass H. Stirring a glass of milk J. Milk turning sour
200
Which statement explains the position of the side of Earth where it is night?
A. The side of Earth is facing the moon. B. The side of Earth is facing away from the sun. C. The side of Earth is being blocked by the moon. D. The side of Earth is between the sun and the moon
200
A bamboo plant’s tough outer layer covers a softer inside that can be used by organisms for food. Panda bears eat as much as 84 kilograms of bamboo each day. Which adaptation of the panda bear allows it to eat bamboo and survive?
A. Pandas have black and white coloring. B. Pandas have several sounds they can make. C. Pandas have six toes and a head with strong jaws. D. Pandas have strong legs that they can use to climb.
200
What happens at the melting point of a substance?
F. The substance begins to turn from a solid into a gas. G. The substance begins to turn from a liquid into a gas. H. The substance begins to turn from a gas into a liquid. J. The substance begins to turn from a solid into a liquid.
300
A large wood log will float in water, but a small rock will sink. Which property of these two objects explains the difference in the way they act when placed in water?
A. Size B. Mass C. Weight D. Density
300
Ahmad is trying to decide which pan to use for cooking. He wants his food to cook quickly and evenly. He has the following types of pans from which to choose: • Aluminum • Copper • Glass • Plastic Which material should Ahmad use for cooking?
A. Aluminum, because it is a good electrical conductor B. Copper, because it is a good thermal conductor C. Glass, because it is a good electrical insulator D. Plastic, because it is a good thermal insulator
300
Crystal thinks that plants grow better with light than in the dark. To test this hypothesis, she performed an experiment with the following steps: • Plant five radish seeds in one cup of soil and five carrot seeds in another cup of soil. • Give both cups the same amount of water. • Place the radish seeds under a lamp, and water them every day. • Place the carrot seeds in a dark closet, and water them every day. Crystal changed more than one variable in her experiment. Which of these changes should Crystal make so that her data are helpful in answering her hypothesis
F. Use only one type of seed G. Place both cups in the closet H. Place all the seeds in one cup J. Use two different types of soil
300
Birds sometimes fluff their feathers, which traps a layer of air next to their bodies. How does fluffing its feathers help a bird control its temperature?
A. It keeps the bird warm because air is a good insulator. B. There is less space in the nest so the bird traps in heat. C. This increase in size of the bird will create areas for airflow. D. The movement of the bird will keep it warm from body heat.
300
Kate sets up the following investigation: • Gather three beakers of equal volume. • Fill each beaker with the same amount of water. • Pour the same amount of salt into each beaker. • Put one beaker in the refrigerator. • Put one beaker under a heat lamp. • Put one beaker on the counter. Which of these is the variable in Kate’s investigation?
A. Temperature of the beaker B. Size of the beaker C. Amount of water D. Amount of salt
400
Which statement describes why phytoplankton is classified as a plant instead of an animal?
F. It has a nucleus inside each cell. G. It is used by organisms for food. H. It uses sunlight to make its own food. J. It reacts to stimuli in the environment
400
Josie investigated chemical and physical changes using eggs. She did the following four actions to four different eggs: • Boiled • Cracked • Fried • Scrambled Which action describes a physical change?
F. Boiled G. Cracked H. Fried J. Scrambled
400
An object is made from a material that is hard and shiny and that can be hammered into thin sheets Which of these is another likely property of the material?
F. It dissolves in water. G. It has a low boiling point. H. It is a good conductor of heat. J. Its density is less than that of water.
400
How does a camera use a lens?
A. The lens absorbs light rays and makes a copy of the image. B. The lens reflects the image onto the film so it can be printed. C. The lens is opaque and blocks all of the light except for the image. D. The lens forms an image by refracting light rays that pass through it.
500
For centuries, people had harmful infections that are today easily treated with antibiotics. An antibiotic is a substance produced by certain fungi, bacteria, and other organisms that can destroy other microorganisms. One antibiotic was discovered by accident by Alexander Fleming when he left bacteria out in his lab. When a mold accidentally infected the bacteria, Fleming saw that the bacteria in the area right around the mold had been destroyed. This led to the creation of penicillin as a medicine to destroy harmful bacteria in the body. How did Fleming’s discovery of penicillin later help to save millions of lives around the world?
F. It made it easier for other scientists to grow mold cultures in their labs. G. It provided a way to destroy the bacteria that the body could not fight off. H. It provided doctors with a way to find the location of bacteria in the body. J. It allowed people to choose the kind of bacteria that they wanted to destroy
500
In places that have cold winters, people spread salt on icy roads and sidewalks. Which of these does the salt do to the ice?
F. It raises the density of ice, causing it to be less slippery. G. It destroys the matter of ice, causing the ice to break apart. H. It lowers the freezing point of water, causing the ice to melt. J. It increases the boiling point of ice, causing it to turn into water.
500
town near Malcolm’s community is having difficulty with deposition in a local stream. Sediment is being carried downstream, settling to the bottom, and a new landform is being created that causes the stream to change its path. How is beach erosion different from deposition in a stream?
A. Deposition in a stream is caused by animals, and beach erosion is caused by weather. B. Beach erosion creates habitats, and stream deposition destroys new habitats for organisms. C. Stream deposition happens only in fresh water, and beach erosion happens only in salt water. D. Beach erosion is a destructive process, and deposition in a stream is a constructive process.
500
A bus is traveling north at a speed of 90 kilometers per hour (km/hr). A motorcycle traveling north at a speed of 120 km/hr passes the bus. Which describes what the bus’s motion looks like to the driver of the motorcycle?
F. The bus looks like it is moving south at 30 km/hr. G. The bus looks like it is moving north at 90 km/hr. H. The bus looks like it is moving north at 120 km/hr. J. The bus looks like it is moving south at 210 km/hr.
500
Amelia designed a special cup to keep drinks cold even on hot days. The cup has a layer of gel between layers of plastic. Why is Amelia’s cup better able to keep drinks colder than a regular glass cup
F. Gel is a better insulator than glass. G. Glass is a better insulator than plastic. H. Gel is a better conductor than plastic. J. Plastic is a better conductor than glass.