| A | B |
|---|
| Larynx | two folds of tissue that make up voicebox |
| elasticity | ability of a material to bounce back |
| density | ratio of mass of a substance to its volume |
| intensity | amount of energy per second carried through unit area by a wave |
| loudness | perception of the intensity of a sound |
| decibels | unit of measurement of loudness |
| ultrasound | sound wave with frequency above 20,000 Hz |
| infrasound | sound wave with frequency below 20 Hz |
| pitch | perception of frequency of a sound |
| Doppler Effect | the apparent change in frequency of sound as the source moves in relation to listener |
