Ears and Hearing

Where are the tiny hairs found, which detect vibrations and create electrical signals?

• ear drum

• cochlea

• auditory nerve

• ossicles

What carries electrical signals from the ear to the brain?

• ear canal

• cochlea

• auditory nerve

• olfactory nerve

Tags

NGSS.MS-LS1-8

What is the frequency range of human hearing?

• 20 - 20 000 Hz

• 200 - 200 000 Hz

• 200 - 20 000 Hz

• 20 - 200 000 Hz

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Inside the cochlea, what causes the membrane to detect different frequencies of sound?

• The membrane is thicker at one end than the other

• There are different number of hairs in different parts of the membrane

• The hairs are of different lengths along the membrane

• There is more fluid at one end than the other

What is the function of the ridges on your outer ear?

• They prevent germs from entering your middle ear.

• They direct sound into your middle ear.

• They prevent loud noises from damaging your inner ear.

• They filter out very high and low-frequency sounds.

What is unique about the hammer, stirrup, and anvil?

• They are the smallest bones in your body

• They are the only bones in your body that move

• They are the only bones located in your head

• They are the only bones that cannot be broken

If your inner ear lacked nerve fibers, what might happen?

• Sound would be unable to travel to your brain.

• Your eardrum would be unable to vibrate.

• Your hammer could not tap against your anvil.

• Sound waves could not enter your ear.

Place the following events in sequence: Your eardrum begins vibrating; Electrical impulses travel along nerve fibers; The hammer, anvil, and stirrup begin moving

• B, C, A

• A, B, C

• B, A, C

• A, C, B

Which word best describes the auditory (ear) canal?

• Filled with water

• Hollow

• Lined with sensitive nerve fibers

• Vibrating

How is your eardrum like a real drum?

• It produces sound.

• It vibrates.

• It is frequently struck by the bones in your middle ear.

• It is hollow.

Tags

NGSS.MS-PS4-1

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