Volume and Pitch

• Science
• Lower Secondary (Key Stage 3)

Volume and Pitch

Which wave is louder?

1. A
2. B

Which wave is louder?

1. Top
2. Bottom

Which wave is louder?

1. Top
2. Bottom

What is the unit of loudness?

1. Decibels (Db)
2. Hertz (Hz)
3. Meters per second (m/s)
4. Amps (A)

What is the unit of frequency?

1. Decibels (Db)
2. Hertz (Hz)
3. Meters per second (m/s)
4. Amps (A)

Which wave is higher pitched?

1. A
2. B

Which wave is higher pitched?

1. Top
2. Bottom

Which wave is higher pitched?

1. Top
2. Bottom

Which waves have the same loudness?
Which waves have the same pitch?

Match the description to the wave.

Match the keywords to the descriptions.

Affects the loudness of the sound.

Affects the pitch of the sound.

Lets us see a picture of the sound waves created.

Frequency

Oscilloscope

Amplitude

Sound        is the loudest and sound       is the quietest.

Sound        is the highest pitched because it has the                                 frequency.

Sound        is the lowest pitched because it has the                                 frequency.

A

A

A

B

B

B

C

C

C

highest

lowest

Loudness (loud to quiet)

Pitch (high to low)

A

A

B

B

C

C

D

D

What are the units of loudness and frequency?

Compare waves D and E in terms of loudness and pitch.

Dolphins communicate using high pitched, low volume clicks. Describe the sound in terms of amplitude and frequency.

Match the keywords to the definitions.

The number of waves per second.

The distance between the same point on neighbouring waves.

The distance from the middle to the crest/trough of the wave.

The time taken for one wave to pass.

Amplitude

Frequency

Period

Wavelength