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A sound wave is essentially fast changing sound pressure. Longitudinal sound waves need a medium to travel through in order to exist e.g mostly air, water, metal... A sound wave is the pattern of disturbance caused by the movement of sound ...
A sound needs a moving sound source of a frequency between 20 Hz and 20 kHz.
Wiki User
∙ 13y ago
Wiki User
∙ 9y agoThe vibration of an object produces sound when nearby air molecules turn into sound waves by moving back and forth as a result of the vibration.
Nicole Sprinkle
Air causes the vocal cords to vibrate and also vibrates against the surface of the throat and mouth.
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