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Sound
Properties of sound
Term | Definition |
---|---|
loudness | the extent to which a sound can be heard |
pitch | a measure of how high or low a sound is perceived to be, depending on the frequency of the sound wave |
decibel | the most common unit used to measure loudness (symbol dB) |
soundwave | a longitudinal wave that is caused by vibrations and that travels through a material medium |
longitudinal wave | a wave in which the particles of the medium vibrate parallel to the direction of wave motion |
mechanical wave | a wave that requires a medium through which to travel |
Doppler effect | an observed change in the frequency of a wave when the source or observer is moving |