Heat and Light Test Review
1. Which of the following is an example of heat conduction?
A. An air vent from a furnace sending hot air into the house.
B. A metal cup heating up when hot water is poured into it.
C. The sun melting the ice formed on a frosty lawn.
D. Cool air sinking to the ground on a cold night.
2. Which is the best activity to help keep a home cool in the summer?
A. Open the refrigerator often.
B. Turn off the television, radios and computers.
C. Open the windows during the day.
D. Close the shades where the sun is shining.
3. In a room in the wintertime, where would you find the warmest air?
4. What happens to the light particles when light hits an uneven surface.
A. They are reflected off in a straight line.
B. They are scattered in many directions.
C. They are absorbed by the surface.
D. They pass through the surface.
5. Why do you see your image in a mirror?
A. Light is reflected.
B. Light is refracted.
C. Light is absorbed.
D. Light is diffused.
6. Which of the following is an example of a light reflector?
A. the planet Mars
B. lightning
C. exploding fireworks
D. stars
7. Why is the moon classified as a light reflector instead of a light producer?
8. Nate was stirring hot soup on the stove. Why should he use a wooden spoon instead
of a metal spoon?
9. Heather put a straw in a glass of water. When she looked at the side of the glass she
observed that the straw appeared larger and also appeared to be broken. Why did it
appear this way?
10. Explain the difference between a light producer and a light reflector.
11. By what process does heat energy travel from the sun to Earth?
12. What makes a hot air balloon rise? The particles of air in the balloon
A. decrease in size and make the balloon lighter than air.
B. increase in size and make the balloon lighter than air.
C. are farther apart and make the balloon lighter than air.
D. are closer together and make the balloon lighter than air.
13. What happens to light when it passes through a translucent material such as waxed
paper? Most of the light
A. passes through.
B. is reflected in a straight line.
C. is absorbed and very little is reflected.
D. is not allowed to pass through.
14. Why are curved mirrors used in car headlights?
A. They make things look smaller.
B. They make things look bigger.
C. They focus light straight ahead.
D. They spread light in many directions.
15. Which of the following is an example of a light reflector?
A. fluorescent light
B. fireflies
C. concave mirror
D. campfire
.
16. Explain why you are able to see the colors of the rainbow when you look at
sunlight shining through the spray from a sprinkler.
17. Why can a person see his or her reflection in a mirror?
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