| A | B |
|---|
| diffraction | bending of waves around an obstacle |
| interference | two waves traveling through the same space |
| compression | area where molcules bunch together in a longitudinal wave |
| rarefaction | where molecules spread out in a longitudinal wave |
| trough | the lowest part of a sound wave |
| crest | the highest part of a sound wave |
| wavelength | shortest distance between two adjacent points in the waves |
| amplitude | maximum displacement from the resting position |
| frequency | number of complete wavelengths that occur in one second |
| pitch | determined by frequency |
| medium | material through which sound travels |
| decibel | measurement of amplitude |
| Hertz | measurement of frequency |
| cochlea | spiral shaped inner ear structure |
| anvil | passes vibrations from the hammer to the stirrup |
| ear drum | thin membrane in the middle ear |
| hammer | tiny bone that passes vibrations to the anvil |
| auditory nerve | carry signals to the brain from the cochlea |
| semicircular canals | help maintain balance |
| stirrup | passes vibrations to the cochlea |
| oval window | very small membrane located in the inner ear |
