The diagrams show water waves that move more slowly after passing into shallow water. Which diagram shows what happens to the waves?

The diagram shows a water wave in a ripple tank. Which line represents a wavefront?

The diagram shows a side view of a water wave at a particular time. The diagram is drawn full size. Which statement about the wave is correct?

The diagram represents a water wave. Which row shows the amplitude and the wavelength of the wave?

The diagram represents circular wavefronts coming from point S. The wavefronts strike a barrier and are reflected so that they appear to come from point S1. Which diagram shows the reflected wavefronts?

A water wave moves quickly in deep water. The wave now enters shallow water and its speed decreases. What happens to the frequency and wavelength of the wave?

A small boar in a harbour is protected from waves on the sea by harbour walls. Some waves can curve round the harbour walls and reach the boat. What is the name of this effect?

Which list shows electromagnetic waves in order of increasing frequency?

Waves travel more quickly on the surface of water when the water is deep. A stone is dropped at point X into a pool of varying depth. The diagram shows the first wavefront on the surface of the pool. The region between X and which labelled point is likely to be the deepest?

A boy throws a small stone into a pond. Waves spread out from where the stone hits the water and travel to the side of the pond. The boy notices that eight waves reach the side of the pond in a time of 5.0s. What is the frequency of the waves?

A vertical stick is dipped up and down in water at P. In two seconds, three wave crests are produced on the surface of the water. Which statement is correct?

Sound waves of frequency 2.0kHz travel through a substance at a speed of 800m/ s. What is the wavelength of the waves?

The frequency of a wave is doubled. The speed of the wave does not change. What happens to the wavelength of the wave?

At night, bats emit pulses of sound to detect obstacles and prey. The speed of sound in air is 340m/s. A bat emits a pulse of the sound of wavelength 0.0085m. Calculate the frequency of the sound.

Explain, in terms of wave theory, what occurs as the wavefront strikes the boundary.

State whether there is an increase, a decrease or no change in the wavelength of the wave after it strikes the boundary.

Some plane waves travel on the surface of the water in a tank. They pass from a region of deep water into a region of shallow water. State what happens at the boundary, if anything to the frequency and the speed of the waves.

For a [BLANK] wave, the points along the wave vibrate at 90 degrees to the direction in which the wave is moving.

For a [BLANK] wave, the points along the wave vibrate in the same direction that the wave is moving in.

When waves [BLANK] off a barrier, the angle of reflection, r, is equal to the angle of incidence, i.

When waves enter a different medium, their speed can change. This effect is called refraction, and it can cause the wave to change direction and the [BLANK] of the waves to increase or decrease.

When water waves travel from deep area to shallow area, it will be refracted towards [BLANK].

Water waves will refract [BLANK] from the normal line when travelling from shallow area to deep area.

When waves pass through a narrow [BLANK], the waves spread out. This effect is called diffraction.

The size of the gap, when compared to the [BLANK], affects how much the waves spread out during diffraction.

Diffraction can also occur when waves pass an edge. When a wave goes past the edge of a barrier, the waves can [BLANK] around the edge.