Waves vocab

3. the apparent bending of waves around a small obstacle
5. material through which waves travel
7. the highest point of a transverse wave
9. the change in direction of a wave due to a change in its medium
12. the location of objects by reflected sound, in particular that used by animals such as dolphins and bats
13. the distance between two corresponding parts of a wave
16. to bounce off
18. a wave that transfers energy perpendicular to its medium. The energy moves one direction while the medium moves at a right angle to it
19. the lowest point of a transverse wave
20. waves that move the medium parallel to the direction in which the waves travel
21. vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear

1. measure of wave energy; the distance between a waves' resting point and the top or crest of the wave
2. a sound or series of sounds caused by the reflection of sound waves from the surface back to the listener
4. parts where the waves are close together
6. the quality of a sound made by the number of vibrations (the highness or lowness of a sound)
8. a disturbance that carries energy through matter or space
10. a wave that requires a medium in which to travel and carry energy
11. an increase(or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other
14. a repeated back and forth or up and down motion
15. parts where the waves are spread out
17. the ability to do work