A longitudinal wave has compression and rarefaction only, sound wave is also a longitudinal waves but it has amplitude also. Why?

Asked by  | 11th Feb, 2014, 08:17: PM

Expert Answer:

Sound waves travel in a medium like a gas, liquid or a solid. They are also called pressure waves.
When sound travels in a medium, the particles of the medium vibrate according to pressure changes. This motion is like a wave motion.
Wave motion has amplitude associated with it. Hence, we say that sound has an amplitude.

Answered by  | 12th Feb, 2014, 12:40: PM

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