Waves (Review)

What do waves transfer?

• energy but not matter

• energy and matter

• matter but not energy

What is the name of the distance from peak to peak of a wave?

• wavelength

• amplitude

• frequency

Small water waves are created in a ripple tank by a wooden bar.

The wooden bar vibrates up and down hitting the surface of the water.

The figure shows a cross-section of the ripple tank and water.

Which letter shows the amplitude of the water wave?

• J

• K

• L

How do oscillations move in a transverse wave?

• Randomly

• At right angles to the direction of wave travel

• Parallel to direction of wave travel

Answer explanation

Transverse waves oscillate (vibrate) at right angles to the direction of wave travel.

How do oscillations move in a longitudinal wave?

• Randomly

• At right angles to the direction of wave travel

• Parallel to the direction of wave travel

Answer explanation

The oscillations (vibrations) in longitudinal waves are parallel to the direction of wave travel

Which of these is an example of a transverse wave?

• microwave

• sound wave

• seismic P-wave

What is the unit for time period?

• metres (m)

• Hertz (Hz)

• seconds (s)

What is the correct formula relating time and frequency?

• f = 1 / t

• f = t

What is the frequency of a wave with a time period of 0.08 s?

• 8 Hz

• 1.25 Hz

• 12.5 Hz

How is the speed of a wave calculated?

• v = f / λ

• v = f x λ

• v = λ / f