Sound Flashcards Preview

Physics-Waves > Sound > Flashcards

Flashcards in Sound Deck (18)
Loading flashcards...
0
Q

What’s a frequency?

A

It’s the pitch so if the sound goes higher or lower.

1
Q

How does an object produce a sound?

A

It produces a sound by vibrating.

2
Q

What’s the amplitude?

A

It’s how loud the sound is so if it’s quiet or loud.

3
Q

A loud note has a….?

A

high amplitude.

4
Q

A soft note has a…?

A

low amplitude.

5
Q

A high pitch sound has a…?

A

high frequency.

6
Q

A low pitch has a…?

A

low frequency.

7
Q

What happens to the wavelength if you have a high frequency?

A

The higher the frequency, the shorter the wave length.

8
Q

Can sound travel through a vacuum?

A

No, sound needs a material medium.

9
Q

How fast does sound travel in different material mediums?

A

Sound travels faster through solids because the particles are closer together than in a liquid or a gas, so the vibrations are more easily passed from particle to particle.

10
Q

Why can you sometimes see things before you hear them?

A

Because light travels faster than sound.

11
Q

How fast does sound travel?

A

Around 330m/s

12
Q

What do sound waves do?

A

Travel through the air.

13
Q

What does the ear flap do?

A

It funnels the sound waves into the ear canal.

14
Q

What does the ear drum do when sound reaches it?

A

It starts to vibrate.

15
Q

What are the three small bones in the ear?

A

The hammer, anvil and stirrup.

16
Q

What do the bones do?

A

They pass vibrations to the cochlea.

17
Q

What does the cochlea do?

A

It is a spiral tube that contains liquids and nerve cells and when the liquid vibrates the nerve cells send messages to your brain.