Show:
The Ear
Pitch
Volume
100
This is the part of the ear that you can see. It gathers sound waves from the air and funnels them toward the eardrum.
What is the outer ear?
100
A boy is plucking a stretched rubber band to make sounds. How can he change the pitch?
What is stretching the rubber band more or less tightly.
100
Two people hear a dog barking. Person A is 5 meters away. Person B is 20 meters away. Which is MOST LIKELY true?
What is the bark sounds louder to person A?
200
The ____________ is a thin flap of skin that vibrates when sound waves strike it. It passes the vibrations to the middle ear.
What is the eardrum?
200
Which does the pitch of a sound wave determine?
What is frequency?
300
Here are coiled tubes filled with fluid. Vibrations from the middle ear make the fluid vibrate. This causes nerve cells to send signals to the brain.
What is the inner ear?
400
Three tiny bones of the ___________ pick up vibrations from the eardrum. They pass the vibrations to the inner ear.
What is the middle ear?
500
Humans detect sound waves with their ________.
What is the human ear?