Understanding Sound and Hearing

What does sound need to travel?

• A medium

• Electricity

• Light

• Vacuum

What is the first bone connected to the eardrum called?

• Stirrup

• Anvil

• Hammer

• Cochlea

What part of the ear collects sound waves?

• Auditory nerve

• Outer ear

• Inner ear

• Eardrum

What does the cochlea in the inner ear resemble?

• A tree

• A leaf

• A rabbit

• A snail

What happens when the eardrum vibrates?

• It sends signals directly to the brain

• It moves the hammer, which then moves the anvil and stirrup

• It stops vibrating immediately

• It produces light

What is the role of the tiny hairs in the cochlea?

• They produce sound

• They filter out unwanted sounds

• They absorb light

• They wiggle to help transmit sound vibrations