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Jeff Science LR > Physics: Sound & Hearing > Flashcards

Physics: Sound & Hearing Flashcards

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1
Q

The loudness of a sound

A

Amplitude

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2
Q

A device which shows the amplitude and the frequency of a sound

A

Oscilloscope

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3
Q

The larger the amplitude of the wave on the trace, the (louder/quieter) the sound

A

Louder

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4
Q

The pitch of a sound

A

Frequency

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5
Q

The greater the frequency of the waves on the trace, the (lower/higher) the pitch

A

Higher

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6
Q

Give an example of how we use high frequency waves

A

Ultrasound scans

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7
Q

A form of energy which travels almost 100,000 times faster than sound

A

Light

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8
Q

How high or low a sound is

A

Pitch

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9
Q

How loud or quiet a sound is

A

Loudness

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10
Q

What are sound waves unable to pass through

A

A vacuum

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11
Q

What is sound energy is produced by

A

Vibrations

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12
Q

What does sound travel in

A

Waves

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13
Q

What is the major job of the ears

A

To hear sounds

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14
Q

What other major function does the ear carry out

A

It helps us to maintain balance

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15
Q

what is another name for the outer ear

A

Pinna

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16
Q

Why is the outer ear shaped like this

A

To help funnel the waves

17
Q

What comes after the outer ear

A

The ear canal

18
Q

What is found at the end of the ear canal

A

The ear drum

19
Q

What are the names of three small bones which are found behind the ear drum

A

The hammer, anvil & stirrup (ossicles)

20
Q

What do the three small bones in the middle ear do

A

They amplify the vibrations

21
Q

In which part of the ear is the cochlea

A

The inner ear

22
Q

Roughly how many tiny hairs are in the cochlea

A

17,000

23
Q

What do the tiny hairs in the cochlea do

A

They convert the vibrations into electrical signals

24
Q

What nerves take the electrical signals to the brain

A

The auditory nerves

25
Q

What does the brain do to the electrical signals

A

It interprets them

26
Q

What can too loud sounds do to your hearing

A

It can permanently damage it

27
Q

Over time, what can happen to the tiny hairs in the cochlea

A

They can get permanently damaged

28
Q

Can sound travel through gases

A

Yes

29
Q

Can sound travel through solids

A

Yes

30
Q

Can sound travel through a vacuum

A

No

31
Q

Can sound travel through liquids

A

Yes

32
Q

What can sound travel the fastest through - Solids, liquids or gases

A

Solids

Jeff Science LR (7 decks)

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