What happens to sound waves after they are recieved by our ears?

They cause the ear drum to vibrate.

Explanation:

The sound waves cause the eardrum to vibrate, which sets the three tiny bones in the middle ear into motion. The motion of the three bones causes the fluid in the inner ear, or cochlea, to move. The movement of the fluid in the inner ear causes the hair cells in the cochlea to bend

There you go.

Have a terrific day.