WAVES

2. rhythmic disturbance that carries energy but not matter
4. a reflected sound wave
5. the bending of a wave around a barrier
11. a material that allows only some light to pass through
13. the point in a compressional wave where the matter is squeezed together
14. the point in a compressional wave where the matter is spread out
16. waves that can travel through matter or space
17. has a surface that is curved inward
18. the bending of a wave as it moves from one medium to another because of a change in speed
23. the change in frequency that is due to the motion of sound
24. occurs when a wave strikes an object or surface and bounces off

1. the identical point on a wave to the identical point on the next wave
3. the number of wavelengths that pass a given point in one second
6. the ability of two waves to combine and form a new wave when they overlap
7. how high or low something sounds
8. a type of wave in which the matter in the medium moves forwards and backwards along the direction the wave travels
9. a type of wave that can travel only through matter
10. a material that allows no light to pass through
11. a type of wave in which the waves energy causes the matter in the medium to move up and down or back and forth at right angles to the direction the wave travels
12. has a surface that is curved outward
15. a material that allows nearly all light to pass through
19. the human perception of the intensity of a sound wave
20. the matter through which a mechanical wave travels
21. for a transverse wave one half the distance between a crest and a trough
22. transparent object with at least one curved side that causes light to bend