Waves - Lesson 7 Quiz

Into how many main parts can our ears be divided?

• Two

• Three

• Four

• Five

What is the function of the tiny hair cells in the inner ear?

• They produce sound waves.

• They cool down the ear.

• They stimulate thousands of tiny hair cells.

• They send electrical signals to the auditory nerve.

Tags

NGSS.MS-LS1-3

Why is the outer ear angled forwards?

• To help us hear sounds behind us better.

• To help us hear sounds in front of us better.

• To protect the ear from water.

• To improve our sense of balance.

What is the outer ear also known as?

• The eardrum

• The cochlea

• The pinna

• The auditory canal

Where does the eardrum sit in relation to the middle ear?

• In front of the middle ear

• Behind the middle ear

• Next to the middle ear

• Inside the middle ear

What are the three tiny bones in the middle ear called collectively?

• Auditory bones

• Ossicles

• Cochlea bones

• Ear canal bones

The first bone of the middle ear is known as the _______, and it connects the inner wall to the eardrum.

• Anvil

• Stirrup

• Hammer

• Cochlea

What is the role of the cochlea in the inner ear?

• To amplify sound waves

• To convert mechanical vibrations into electrical impulses

• To connect the eardrum to the hammer

• To pass vibrations to the three small bones

How does the cochlea send signals to the brain?

• Through the auditory canal

• By the auditory nerve

• Via the eardrum

• Through the ossicles

What does the eardrum do when sound waves vibrate it?

• It sends electrical signals to the brain

• It converts vibrations into electrical impulses

• It pushes on the hammer to move the anvil and stirrup

• It amplifies the sound for the cochlea

Tags

NGSS.MS-PS4-1