Sound

Sounds are waves produced by the ________________ of objects.

• voices

• vibrations

• movement

• energy

Sound is a _____________ wave.

• transverse

• longitudinal

• electromagnetic

What is the order for the speed of sound?

• A

• B

• C

• D

Which waves consist of compressions and rarefactions?

• gamma rays

• infra-red waves

• radio waves

• ultrasound waves

The graph shows how the air pressure varies as a sound wave passes through air.

Which point represents a compression?

• A

• B

• C

• D

The diagram shows a sound wave with labelled compressions and rarefactions. The distance between the first compression and the last compression is 12 m. Determine the wavelength of the sound wave.

• 3 m

• 4 m

• 6 m

• 12 m