When you talk, your vocal cords _______

Vibrations move through the air in ______ _______.

When your vocal cords are not vibrating, there is no _______.

Sound waves move through the ______.

When sound waves meet your ______ , tiny bones vibrate.

To hear, a _______ lays its head on the ground and feels the vibrations from the sound waves.

Mother __________________ find their babies by sending clicking sounds through the water and use the echoes to find out where their babies are.

Sound is measured in _________.

Vibrations in the air ripple across when noise is created.

A bat uses ________ to help find its food.

What device does a boat use to track an object in the ocean?