| A | B |
|---|
| sound | wave produced by a vibrating object and travels through matter |
| vibration | a rapid, back and forth motion |
| vaccum | empty space in which sound travels |
| pitch | characteristic highness or lowness of a sound |
| hertz | one complete wave/cycle per second |
| ultasound | sound waves with the range over 20,000 hertz |
| resonance | the amplitude of the sund fromt he vibrating object adds together with teh amplitude of the initial sound wave |
| Doppler effect | change in perceived pitch that occurs when the source or receiver of a sound is moving |
| intensity | amount of energy a sound wave has |
| decibel | unit used to measure intensity |
| amplification | increasing of the stregth of an electrical wave |
| acoustics | scientific study of sound |
| echolocation | sending out ulrtasound waves and interpreting the returning sound echoes |
| sonar | instraments that use echolocation to locate objects |
