| A | B |
|---|
| frequency | distance between identical points on two waves |
| noise pollution | sounds that are loud, annoying, or harmful |
| acoustics | the study of sound |
| compressional wave | matter vibrates in the same direction as the wave travels |
| pitch | the highness or lowness of a sound |
| medium | material through which a wave travels |
| frequency | expressed in Hertz ; the number of wave crests that pass one place each second |
| trough | lowest points of a transverse wave |
| crest | the highest points of a transverse wave |
| interference | ability of two or more waves to combine and form a new wave |
| Doppler effect | pitch/frequency increase as an object approaches you but decreases as the object moves away |
