Year 9 Waves

Sound waves travel at a speed of 1500 m/s though water. Their wavelength is 5.00 cm. Calculate their frequency

• 30 kHz

• 75 Hz

• 7.5 kHz

• 300 Hz

The speed of a wave is doubled. The frequency remains the same. What happens to the wavelength

• It halves

• It doubles

• It remains the same

• It quadruples

Six water waves pass a point in 3.2 s. Calculate the frequency of the waves to 3 s.f.

• 1.50 Hz

• 1.88 Hz

• 0.533 Hz

• 19.2 Hz

Which is an example of a longitudinal wave

• Light

• Ultrasound

• Microwave

• Water

This is an example of which type of wave?

• Longitudinal

• Transverse

In the diagram what does A refer to?

• Frequency

• Compression

• Wavelength

• Amplitude

• Rarefaction

In the diagram what does B refer to?

• Frequency

• Compression

• Wavelength

• Amplitude

• Rarefaction

In the diagram what does C refer to?

• Frequency

• Compression

• Wavelength

• Amplitude

• Rarefaction

What is the wavelength?

• 0.5 m

• 1.0 m

• 2.0 m

• 3.0 m

What is the time period of this wave?

• 2.0 s

• 4.0 s

• 8.0 s

• 10. s