Waves Review

3. When all the primary colors of light are combined you this color
7. The _______ pitch sounds have a higher frequency
9. Diffraction is when a wave hits a _____ and bends.
10. When red and green light combines, you get this color
11. The two types of waves are transverse and _______
12. Sound has to travel through a _____, liquid, or gas
13. This type of electromagnetic wave can destroy cells, including cancer
14. The reflection of a sound wave
16. A straw appears broken in a glass of water because of this phenomenon
18. The low part of a transverse wave
19. The electromagnetic spectrum puts the waves in order of increasing _____.
23. When sound moves towards you, the waves get _____ _____.

1. The unit for a sound's loudness
2. All electromagnetic waves travel at the speed of ______
4. Waves that move the matter at right angles to the direction the waves travel
5. The length of one wave from start to finish
6. An apple appears red because it reflects red wavelengths and _____ the other colors
8. The part of a longitudinal wave where the particles are packed tight together
15. You cannot see any light through this type of material
17. The speed of sound at ______ Celsius is 343 m/s
20. This type of electromagnetic wave has the longest wavelength and the lowest frequency
21. Music is when notes combine and it has a pleasant effect. ______ does not have pleasing patterns
22. The unit of frequency