Vocabulary for waves

2. back by a body or surface of light, heat, or sound without absorbing it.
6. The particles in a medium vibrate parallel to the direction of the wave.
9. The highest point on a wave
10. The motion of the particles is
12. The center of a wave that gives energy to the rest of it
13. not able to be seen through; not transparent.
14. The lowest point in a wave
15. allowing light to pass through so that objects behind can be distinctly seen.

1. the action of placing one thing on or above another, especially so that they coincide.
3. The distance from one crest to the next crest is the _____________________.
4. The __________________ is a measure of the number of waves that pass a point in a given amount of time.
5. allowing light, but not detailed shapes, to pass through; semitransparent.
7. to the direction of the wave.
8. The part of a longitudinal wave that makes it squeeze together
11. the part of a wave in which it stretches longitudinal waves out
16. The __________ of a wave is a measure of the amount of energy it carries