Energy is passed from particle to particle

Energy reaches the ear, which allows for hearing

A sound wave is produced when an object vibrates.

Energy from the object is transferred to particles around the vibrating object.

A sound wave is produced when an object vibrates.

Explanation:

-The vibrating body moves in one direction and compresses the air directly in front of it.

-As the vibrating body moves in the opposite direction, the pressure on the air is lessened so that an expansion, or rarefaction, of air molecules occurs.

A vibrating object produces sound waves. Energy needs to be transferred from the vibrating object to the ear through a medium. Therefore, both energy and a vibrating object are needed for people to hear a sound wave.