definitions of compression ana rarefaction of a sound wave? write their relationship.
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Compression and rarefaction (ESACT) However instead of crests and troughs, longitudinal waves have compressions and rarefactions. Compression. A compression is a region in a longitudinal wave where the particles are closest together.
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The amplitude of a sound wave decreases with distance from its source, because the energy of the wave is spread over a larger and larger area. ... Just as a transverse wave alternates between peaks and troughs, a longitudinal wave alternates between compression and rarefaction.
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