Why is sound wave is called longitudinal wave ?
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Longitudinal wave is the one in which particles of medium move in the direction of propagation of the wave..same phenomenon happens while a sound wave travels in air.It travels forming alternate COMPRESSIONS and RAREFACTIONS.in the air.
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sound wave is called longitudinal wave because it is produced by compressions and rarefractions in the air.the air particles vibrates parallel to the direction of propagation
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