Sound Flashcards Preview

Year 7 Physics > Sound > Flashcards

Flashcards in Sound Deck (8)
Loading flashcards...
1

What happens to the ear drum when you hear a sound?

It vibrates

2

How can the ear drum get damaged?

Loud sounds can make a hole in it.
Sharp objects can make a hole in it.

3

What is the wavelength of a wave?

The distance between two peaks on the wave.

4

What is the amplitude of a wave?

The distance between a peak and the centre line of the wave.

5

How are pitch and frequency related?

Higher pitch sounds have a higher frequency.

6

How are amplitude and volume related?

Higher amplitude is louder..

7

How can two waves combine to make less sound.

Waves superpose together.
If peaks meet troughs the sound cancels out.
That makes the amplitude lower, so it is quieter.

8

How does sound travel?

Vibrations in particles in a substance.
Sounds travel fastest through solids, then liquids then gases.