Sound can be visualized as a wave due to the way it propagates through a medium by causing particle motion.
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The disturbance created by the sound source is carried forward during the propagation of sound in a medium.
The particles of the medium set neighbouring particles into motion, but they do not move forward themselves.
A wave is a disturbance that moves through a medium by setting neighbouring particles into motion.
The disturbance created by the source of sound travels through the medium to carry the sound to your ear, not the particles of the medium themselves.