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Science > Sound > Flashcards

Sound Flashcards

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1
Q

What produces a Sound Wave?

A

A vibration

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2
Q

What is the same direction as the wave?

A

Oscillations

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2
Q

How do air molecules move when producing a sound wave?

A

Backwards and Forwards

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2
Q

What does sound need?

A

It needs a medium like a solid, liquid or gas

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2
Q

Are sound waves Longitudinal?

A

Yes

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3
Q

Does sound die out?

A

No, it just spreads out

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4
Q

What can sound not travel through?

A

A vacuum

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5
Q

Why can’t sound travel through a vacuum?

A

There are no Air molecules to vibrate.

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6
Q

How many times are solids more denser than gas?

A

1000 more times

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7
Q

What happens if particles are very close together?

A

The vibration is passed along more quickly.

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8
Q

What travels faster, light or sound?

A

Light

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8
Q

What does sound waves transfer?

A

Energy

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9
Q

What does amplitude mean?

A

It is the maximum amount of vibrations as measured from the middle wave.

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10
Q

What is amplitude measured in?

A

It is measured in hz

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11
Q

What is frequency measured in?

A

It is measured in hertz

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11
Q

What does frequency mean?

A

It is the number of waves produced in one second.

12
Q

What is the top of a wave called?

A

A peak or crest

12
Q

What does wavelength mean?

A

It is the distance between two corresponding points on a wave

13
Q

What is wavelength measured in?

A

Measured in Hertz

14
Q

What is the bottom of the wave called?

A

A trough

14
Q

What are three properties of a wave?

A

Amplitude, Frequency and wavelength.

15
Q

What is an echo?

A

It is when sound bounces of two or more surfaces that reflects from each other.

15
Q

What is absorption?

A

It is when some of the sound wave is absorbed to make a quieter sound.

16
Q

What happens if you want to make a higher pitched sound?

A

You need to make something vibrate faster so that there are more waves per second.

17
Q

If you change the frequency, does it affect the amplitude?

A

No it doesn’t

18
Q

What property of a sound wave affect the pitch of the sound?

A

The frequency

Science (8 decks)

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