Question

what are sound waves?

meaningful answer✓​

Answer 1

It is a wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.

Answer 2

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$\implies$sound is a kind of longitudinal mechanical wave.

$\implies$a wave is a disturbance produced in a medium that carries energy from one part of the medium to another without the tranfer of matter.

$\implies$it is the wave in which particals vibrate up and down.

$\implies$we can also say that it is a wave in which particals of the medium oscilate in a direction perpendicular to the direction of propagation of the wave.

$\implies$ during the propovation they form crests and throughs.