Question

how do sound reaches our ears

Answer 1

Sounds causes a vibration in the air, so when we produce any sounds these air molecules vibrant at a larger speed and reaches our ear .
So, in this way sounds reaches our ears.

Answer 2

The sound vibrations reaches our ears and goes to the ear drum which is a stretched membrane , when the sound is reached the drum vibrates and the transfers the signal to the brain.this is how we hear the sound