| A | B |
|---|
| reflection | the bouncing of a sound wave off a surface |
| absorption | dissappearance of a sound wave into a surface |
| echo | a reflected sound wave |
| hertz | a unit for measuring frequency |
| echolocation | finding an object using reflected sound |
| doppler effect | change in sound as the object moves toward or away |
| quality | difference f two sounds with the same loudness |
| fundamental frequency | the lowest freq. at which an object vibrates |
