Sound

The Ear

100

Which part of the outer ear collects sound like a funnel?

the pinna

200

Where is ear wax located?

inside the ear canal

300

What is the thin piece of skin stretched tightly over the opening to the middle ear?

ear drum

400

After sound travels past the 3 bones of the middle ear the sound waves travel to the __________.

cochlea

500

What are the 3 bones in the middle ear called?

hammer, anvil, and stirrup

Sound All Around

100

What are the four ways to produce sound?

rubbing, striking, moving air, plucking

200

In order to produce sound you must have __________.

vibration

300

How does sound travel?

in waves

400

True or false: Sound can travel through liquids.

True

500

True or false: Sound waves can travel through solids.

True

Good Vibrations

100

Which will have a higher pitch when it is plucked, a short guitar string or a long guitar string?

A short guitar string

200

Which will have a higher pitch when you blow across the top of it, a bottle filled mostly with water or a bottle that is almost empty?

A bottle filled mostly with water

300

Which will have a higher pitch, a drum with the covering stretched tightly or a drum with the covering stretched loosely?

a drum with the covering stretched tightly

400

What do sound waves look like when a low pitch is made?

slow and spread apart waves (less frequency)

500

What do sound waves look like when a high pitch is made?

fast and close together (high frequency)

Describing Sound

100

Pitch can be described as ______ or ______.

high, low

200

Volume can be described as _______ or _______.

loud, soft

300

What is it called when a sound is made louder?

amplification

400

Describe one way you can amplify a sound.

Get closer to the sound, strike/pluck/blow/rub more strongly, create a space for the sound to echo (like a cup)

500

Explain why men have a lower pitch voice than women.

Their vocal cords are bigger (longer and thicker).

Experiments

100

How can you change the pitch on a sound sandwich?

Move the straws close together to make a higher pitch so the vibrating rubber band is shorter. Make it longer for a lower pitch.

200

You can pluck a ruler to make sound. What will happen to the sound if you make the ruler longer?

The pitch will be lower.

300

Which will have a higher pitch when plucked, a thick rubber band or a thin rubber band?

A thin rubber band

400

Explain why the pitch changes when you put a straw deeper into water and blow across it.

The straw fills up with water, which means there is less air vibrating so it produces a higher pitch.

500

Explain what happens when you stretch your vocal cords very tight and when you loosen your vocal cords.

When you stretch your vocal cords tight you can produce a high pitch. When you loosen your vocal cords you produce a lower pitch voice.