Chapter 15 Sound

Sound is made when a source of energy forces the matter to _________.

• shake

• vibrate

• move

• stay still

Frequency of waves is measured in __________.

• hertz

• decibels

• watts

• meters/second

Tags

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The highness or lowness of a sound is its ____________.

• pitch

• volume

• amplitude

• frequency

What happens in the inner ear?

• Sound waves are captured.

• Sound waves move deeper into the ear.

• Sound waves are reflected.

• Pressure waves are converted into nerve impulses.

Tags

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Why do sound waves need a medium to travel?

• They need to bounce off objects.

• They need a medium to carry the vibration.

• They cannot travel in a vacuum.

• Both B and C are correct.

Tags

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The ear canal...

• directs sound from the outer to middle ear

• directs sound from the middle to inner ear

• collects and shapes sound

What is #18?

• Pinna

• Auditory Nerve

• Anvil

• Cochlea

When you want to make a sound, your vocal cords:

• Vibrate

• Inflate

• Loosen

• Deflate

Tags

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Voice of which of the following is likely to have the minimum frequency?

• Baby Boy

• Baby Girl

• A man

• A woman

In which of these types of media will sound travel fastest?

• solid

• liquid

• gas

• vacuum

Tags

NGSS.MS-PS4-1

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