Types of Waves

What is a shingle beach?

• A beach which is armoured with pebbles or small- to medium-sized cobbles (stones).

• A beach composed of fine sand.

What affects the slope of the beach sediment?

• The action of waves.

• The composition of the beach. (Whether it is sand or shingle)

• The time of day.

• None of the above

What causes waves?

• The tide

• The rotation of the earth

• Friction between the wind and surface of the water

• The moon

What factors affect the size of waves?

• Strength of wind

• How long the wind has been blowing for

• The fetch. (The distance of ocean over which the wind blows)

• The amount of rainfall

What is swash?

• The movement of the wave up the beach.

• The movement of the wave down the beach

What is backwash?

• The movement of the wave up the beach.

• The movement of the wave down the beach

What causes backwash?

• The wind

• Gravity

What do constructive waves do to the amount of sediment on the beach?

• The build the beach up (construct it)

• The remove beach sediment (destruct it)

What do destructive waves do to the amount of sediment on the beach?

• The build the beach up (construct it)

• The remove beach sediment (destruct it)

Which type of wave has a strong swash and a weak backwash?

• Constructive

• Destructive