| A | B |
|---|
| wave | caused by a vibration |
| wavelength | distance from crest to crest |
| frequency | determines a sound's pitch |
| amplitude | determines loudness |
| reflection | waves bounce |
| refraction | waves bend |
| Hertz | unit for frequency |
| resonance | vibrations make something else vibrate at its natural frequency |
| decibel | unit for sound intensity |
| sonar | used by submarines to detect underwater objects |
| Doppler effect | change in frequency because of motion |
| oval window | transfers sound vibrations to the cochlea |
| reverberation | echo |
| cochlea | part of the inner ear |
| ultrasound | sounds above 20000 Hz |
