Do You Hear What I Hear?
Purpose/questions: How do we hear? Why are there different sounds? How can sound be
dangerous?
Hypotheses:
1. How do we hear?
2. Why are there different sounds?
3. How can sound be dangerous?
What do you think the model I showed you represents?
What are the sounds you hear?
1.
2.
3.
4.
5.
Using your text book, label the parts of the ear. Remember to also show where the outer, inner,
and middle ear are.
Explain, IN YOUR OWN WORDS, what each part of the ear does.
1. Pinna-
2. Ear canal-
3. Ear drum-
4. Hammer, anvil, and stirrup-
5. Cochlea and little hairs-
6. Nerve of hearing-
What is frequency?
How is frequency related to sound?
Draw a diagram showing low frequency (pitch) and high frequency (pitch).
What is amplitude?
How is amplitude related to sound?
Draw a diagram showing low amplitude (soft sound) and high amplitude (loud sound).
Decibel Meter
As we play the game “How Loud is too Loud” on the computer, write down examples next to the
correct decibels on the meter.
Name:
Challenge Questions
1. The process of hearing: number each statement in order from 1 to 6 to tell how we hear
sounds.
Sound waves vibrate the ear drum.
A signal is sent to the brain through the Nerve of hearing.
The pinna collects sound waves from the air and passes them along the ear canal.
The cochlea receives the vibrations and little hairs change the vibrations to a signal.
The brain interprets the signal and tells us what sound we heard.
The hammer, anvil, and stirrup begin to vibrate.
2. How is frequency related to sound?
a. It determines how loud a sound is.
b. It determines the pitch of the sound.
c. It determines how sound travels.
3. How is amplitude related to sound?
a. It determines how loud a sound is.
b. It determines the pitch of the sound.
c. It determines how sound travels.
4. What are three examples of dangerous sounds that can damage your ears?
5. What is one way you can protect your ears from dangerous sounds?
Extra Credit: Label as many parts of the ear as you can. Each correct answer is worth 1 bonus
point.