How are sound waves produced?

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Amar Kumar 8 years, 4 months ago
Sound is produced when something vibrates. The vibrating body causes the medium (water, air, etc.) around it to vibrate. Vibrations in air are called traveling longitudinal waves, which we can hear. Sound waves consist of areas of high and low pressure called compressions and rarefactions, respectively.
A vibrating object will produce sound waves in the air. For example, when the head of a drum is hit with a mallet, the drumhead vibrates and produces sound waves. ... The region of compression moves outward as the energy from the vibrating drumhead is transferred to groups of molecules farther and farther away.
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