Wave Motion

Which waves are fastest?

• Light waves

• Water waves

• Sound waves

• Standing waves

What type of waves are sound waves?

• Water

• Longitudinal

• Electromagnetic

• Transverse

What part of the ear collects sounds?

• Ear drum

• Ear canal

• Pinna

• Auditory nerve

What is the diaphragm in a telephone most like?

• Ossicles

• Ear Canal

• Ear Drum

• Cochlea

What is the amplitude of a wave?

• The distance between the same two points on a wave

• The maximum height of the wave

• The number of waves per second

• The distance from a crest to a trough

What is the wavelength of a wave?

• The maximum height of the wave

• The number of waves per second

• The distance between the same two points on a wave

• The distance between a crest and a trough

In which does sound travel fastest?

• Liquids

• Solids

• Gases

• Vacuum

Above what frequency is ultrasound?

• 20 dB

• 20 Hz

• 2000 Hz

• 20000 Hz

Check all the correct statements below.

• As frequency increases pitch decreases.

• Wavelength is inversely proportional to frequency.

• Wavelength is directly proportional to frequency.

• Loudness of a sound is solely dependent on its amplitude.

Check all the correct statements.

Ultrasound is used:

• for making images of foetuses

• for taking photos of jewellery

• in mapping the sea

• by elephants to communicate