Unit 7 Study Guide
Name:__________________________
Answer or Separate Sheet of Paper
1. All electromagnetic waves travel at the same________ but they have different ____________ and different frequencies.
2. The name for the range of electromagnetic waves when they are placed in order of increasing frequency.
3. What are Gamma Rays? Do they have the longest or shortest wavelength? Do they have the highest or lowest frequency?
4. What are X-rays?
5. What are Ultraviolet Rays? What can they cause?
6. What is the range of visible light? (Colors) Why are they different?
7. What can infrared be used for? (2 examples)
8. What can microwaves be used for?
9. What are radio waves? Do they have the longest or shortest wavelength? Do they have the highest or lowest frequency?
10. True or False: Light can travel through empty space.
11. True or False: Sound can travel through empty space.
12. What color absorbs most light? How does that affect temperature?
13. What is the bouncing back of a wave when it hits a surface that it can not pass through.
14. What is it called when light rays enter a new medium at an angle, the change in speed causes them to bend or change direction.
15. Light moves fastest through air, water, or glass?
16. What is the number of times a wave passes a set point.
17. On the electromagnetic spectrum the greater the wavelength the lower the ________.
18. How is pitch related to frequency?
19. What causes a rainbow?
20. Sound begins with a _________________ or a disturbance.
21. True or false: Sound can travel through solids and liquids.
22. The tighter and shorter the string, ________________ the pitch.
23. When placed in water, a pencil will appear
24. What is a convex lens? Concave?
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