Vocabulary term

2. a change in frequency when the source of sound is moving relative to the listener
5. a reflected sound wave
7. what is the phenomenon called when a wave bends as it passes from one medium into another
13. waves that can travel through space where there is no matter
14. when a wave strikes an object or surface and bounces off
15. when two waves overlap and combine into a new wave.
16. the number of wavelengths that pass a given point in 1 second

1. what is how high or low a sound is
3. the human perception of how much energy a sound wave carries
4. waves that use a medium to transfer energy
6. matter in the medium moves forward and backwards along the same direction the wave travels
8. top of one crest to the top of the next crest, or from the bottom of the trough to the bottom of the next
9. rhythmic disturbance that carries energy but not matter
10. which wave causes the matter in the medium to move up and down or back and forth at right angles to the direction the wave travels
11. the bending of waves around a barrier
12. half the distance between the crest and trough