5.5 Sound

Front

What happens to the pitch of a sound when the frequency increases?

Back

The pitch becomes higher.

Front

What is the term for when sound molecules are spread out?

Back

Rarefaction.

Front

What does the word 'volume' refer to in sound?

Back

The loudness of the sound.

Front

How is the volume of a sound measured?

Back

In decibels.

Front

What is the term for when sound molecules are pressed together?

Back

Compression.

Front

What is frequency in relation to sound?

Back

The number of sound waves that pass a point in one second.

Front

What is the relationship between frequency and pitch?

Back

Higher frequency means higher pitch.

Front

What is the unit of measurement for frequency?

Back

Hertz (Hz).

Front

What is an example of a sound with low frequency?

Back

A bass drum.

Front

What is an example of a sound with high frequency?

Back

A whistle.