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2016 exam revision > Sound And Light > Flashcards

Flashcards in Sound And Light Deck (12)
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1
Q

How are different sounds made

A

Sound is made by different frequency of sound wave

2
Q

What frequency can a human hear up to

A

About 20000 Hz

3
Q

How do we record and analyse sounds

A

Using a oscilloscope

4
Q

Identify sound wave patterns

A

Long and wide is a low frequency and quiet and long but thin wave is high frequency but quiet, very tall but wide is low frequency but loud and very tall and thin is high frequency but loud

5
Q

Why does sound travel quicker through a solid than a liquid or a gase

A

Because sound is made from vibrations and a solid vibrates so sound can travel quicker

6
Q

Why does a vacuum stop sound

A

Because there is no air so there is nothing for the sound to vibrate off of

7
Q

How do we hear sounds

A

Because of the hammer that is connected to the anvil banning on the ear drum causing vibrations which in ables us to hear

8
Q

How can the ear be damaged

A

Hairs in the cochlea are damaged (permanent) ear drum is torn (temporary) ear canal is blocked (temporary) nerve has been damaged (permanent) middle ear bones have been damaged (temporary)

9
Q

In science when you mix red and green what colour do you get

A

Yellow

10
Q

Mix green and blue what colour

A

Cyan

11
Q

Mix blue and red what colour

A

Magenta

12
Q

Mix red, green and blue what colour

A

White