Year 8 Sound

True or false:

Sound is a longitudinal wave made up of compressions and rarefactions.

• true

• false

True or false:

Sound requires particles in a medium [e.g. a solid, liquid or gas] to travel.

• true

• false

True or false:

If a sound is loud, its amplitude is low.

• true

• false

If a sound has a low frequency, is its pitch high or low?

• high

• low

True or false:

Sound waves can be visualised using an oscilloscope.

• true

• false

True or false:

The unit of frequency is hertz [Hz].

• true

• false

Would a sound wave with a high frequency have a long or short wavelength?

• long

• short

True or false:

Sound waves are made by vibrating objects.

• true

• false

What is an echo?

• A local newspaper

• Sound made by a vibration

• Sound bouncing off an object

• Sound being absorbed by an object

What do you measure in Hertz?

• Wavelength

• Amplitude

• Peaks

• Frequency