Longshore drift & coasts

What is longshore drift?

• The movement of sediment down the beach.

• A pebble drifting slowly into the sea.

• When a beach is really long and people sleep on it.

What is swash?

• Waves pulling material backwards into the sea.

• Waves pushing material forwards onto the shore.

• The movement of a wave sideways.

What is backswash?

• Waves pulling material backwards into the sea.

• Waves pushing material forwards onto the shore.

• When your spit goes back into a drink.

What is prevailing wind?

• The most common and dominant direction that the wind is blowing in.

• A wind that blows onto a beach.

• The last wind to blow.

Do constructive waves build sediment up on a beach, or take sediment away?

• Build up

• Take away

Do destructive waves build sediment up on a beach, or take sediment away?

• Build up

• Take away