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→About Sound
: [[Sound]] is a [[Longitudinal Wave|longitudinal wave]] because the direction of [[vibration]] of the [[particle]]s is [[parallel]] to the direction of motion of the [[wave]].
: [[Sound]] is caused by [[object]]s [[Vibration|vibrating]]. The [[vibration]] is then passed through a [[medium]] as a [[wave]] of [[compression]] and [[rarefaction]].
: [[Sound]] [[wave]]s like all [[wave]]s, carry [[energy]] and [[information]] but they do not [[transfer]] [[mass]] from one location to another.
: [[Sound]] is transmitted due to [[particle]]s colliding with one another.
: The [[speed]] of [[sound]] through [[air]] is 340[[m/s]].