Changes in air pressure caused by the vibration of a surface or object is what we perceive as sounds. What are these changes in pressure called?

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14-08-2019
Physics

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Changes in air pressure caused by the vibration of a surface or object is what we perceive as sounds. What are these changes in pressure called?

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shirleywashington shirleywashington · Answer 1 · 2019-08-20T10:03:12+02:00

Answer:

Compression and Rarefaction

Explanation:

Sound is a wave that propagates through a medium which is actually a vibration. Sound generally travels through a medium in the form of longitudinal waves. These waves cause changes in pressure of the medium causing local compression and rarefaction regions of air. Compression occurs when the sound waves passing through the medium increases the pressure and rarefaction when the pressure decreases.