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Nature of Sound
| Term | Definition |
|---|---|
| sound | a disturbance that travels through a medium as a longitudinal wave |
| echo | a reflected sound wave |
| decibel | a unit used to compare the loudness of different sounds |
| reverberation | the echos of a sound that are heard after the sound source stops producing sound waves |
| density | how much matter, or mass, there is in a given amount of space, or volume |
| Doppler effect | the change in frequency of a wave as its source moves in relation to an observer |
| echolocation | the use of reflected sound waves to determine distances or to locate objects |
| loudness | the perception of the energy of a sound |
| sonar | a system that uses reflected sound waves to detect and locate objects under water |