Question

Why sound needs a medium for its propagation?​

Answer 1

Answer:

Sound needs a material medium for their propagation like solid, liquid or gas to travel because the molecules of solid, liquid and gases carry sound waves from one point to another. Sound cannot progress through the vacuum because the vacuum has no molecules which can vibrate and carry the sound waves.

Answer 2

Answer:

( Generally medium is a way that a sound can go through him. )

Sound need a medium for its propagation because when sound hit any molecule present any where, like in the air, water and solids the molecules present in the object which was hit by sound hit another molecules this chain keep going then we hear a sound but without medium we can not here any sound.