The disturbance caused by a source of sound propagates through the medium by setting neighboring particles into motion, leading to a chain reaction where each particle affects the one next to it.
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The disturbance caused by a source of sound propagates through the medium by setting neighboring particles into motion. When a sound source vibrates, it creates compressions and rarefactions in the medium, which travel outward as a wave. Each particle transfers its energy to adjacent particles, causing a chain reaction of oscillations that propagate the disturbance through the medium.