Question

how then is sound classified as a wave

Answer 1

because they move in a same pattern,sound travels faster and moves in a pattern exactly as the wave.

Answer 2

Sound, in Physics, is a vibration that transmits as an audible wave of pressure. Sound travels through a transmission medium like water, air or other materials as longitudinal wave. It can also be in the form of transverse wave.


For example, when a speaker is played, the medium (speaker) produces vibrations, the vibrations spread away at the speed of sound, thus creating the sound wave