VOCABULARY REVIEW HOMEWORK

3. describes shapes that are curving or bulging outwards
4. How high above or how low below the resting point a wave moves
7. the change in direction of a propagating wave
8. The color with the longest wavelength at 700 nanometers
12. Compress and expand like an accordion; particles are displaced parallel to the direction the wave travels
13. The unit in which frequency is measured
14. the process of becoming smaller or pressed together
16. describes shapes that curve inward
18. the high or low quality of a sound
22. all the electromagnetic waves in order of increasing frequencies
25. The bottom of the wave
26. a decrease in the density of something
27. mechanical vibrations transmitted by an elastic medium
29. Contain both electricity and magnetic fields, move at the speed of light, do not need a medium to pass through, and have different wavelengths and frequencies
30. Disturbances that move energy from one place to another

1. Electromagnetic waves with the most energy
2. matter per cubic cm
5. process by which light changes passing through a narrow slit
6. The distance from crest to crest or trough to trough in between two waves
9. electromagnetic radiation that can produce visual sensation
10. the phenomenon of a propagating wave being thrown back
11. Need a medium to pass through in order to move
15. The color with the shortest wavelength at 380 nanometers
17. the absence of matter
19. The top of the wave
20. smaller wavelengths and therefore higher energy
21. periodic back-and-forth motion of the particles of an elastic body or medium
23. The waves which are perpendicular to the wave motion
24. a form of electromagnetic radiation with wavelength shorter than that of visible light, but longer than X-rays; present in sunlight
28. How many waves pass a specific point in a given amount of time