Waves

For a transverse wave, what is a wavefront?

• a line joining all points on the same crest of a wave

• a line showing the displacement of a wave

• the energy content of a wave

• the first part of a wave to reach a point

A longitudinal wave passes along a spring. The coils of the spring vibrate from side to side. The diagram shows the positions of the coils at one particular time.

• W and X

• W and Z

• X and Z

• Y and Z

A water wave in a ripple tank refracts as it passes from deep water to shallow water. Which properties change as the wave refracts?

• frequency and amplitude

• frequency and wavelength

• speed and frequency

• speed and wavelength

A wave in a ripple tank passes from a deeper to a shallower region and refracts. Which wave properties decrease as the wave enters the shallow region?

• frequency only

• speed only

• frequency and wavelength

• speed and wavelength

Which statement is correct for all electromagnetic waves?

• They are transverse.

• They cannot travel in a vacuum.

• They have the same frequency

• They travel through lead.

A wave of frequency 13000Hz travels 1300m in 4.0s.

What is the wavelength of the wave?

• 0.025m

• 0.40m

• 2.5 m

• 40m

A wave has a frequency of 2 Hz. How many waves are produced in one minute?

• 2 × 60

• 
  

  $\frac{60}{2}$

• 2

• $\frac{2}{60}$

The displacement-distance and displacement-time graphs are for a water wave in a ripple tank.

• 0.02

• 0.08

• 25

• 50

A ripple tank is used to demonstrate refraction of plane water waves.

Waves in deep water have a wavelength of 1.2 cm and a speed of 9.6 cm / s. The wavelength of the waves in shallow water is 0.8cm. What is the speed of the waves in the shallow water?

• 6.4 cm/ s

• 8.0 cm/ s

• 9.6 cm/ s

• 14.4 cm/ s

Waves pass from deep water to shallow water and refraction occurs.

• 0.2 m/ s

• 0.8 m/ s

• 2.0 m/ s

• 5.0 m/ s