Can a diver hear a boat motor in the water? Explain your answer.

A
No; the water will block the sound.

B
No; ears are designed to hear sound in the air, not in water.

C
Yes; sound waves travel through water.

D
Yes; the vibration of the motor bounces off the ocean floor.

C. Yes; sound waves can travel through water. Sound waves can travel through water much more effectively than through air, so a diver can indeed hear a boat motor while underwater.