TTO 2 - §4.3

• Aardrijkskunde
• Middelbare school
• havo, vwo
• Leerjaar 2

§4.3 Coasts

Erosion

Transportation

Deposition

A. This is how waves wear away the coast. The more energy the waves have and the softer the rock, the faster this will be. 

B. This process carries eroded material out to sea, or along the beach – by longshore drift.

C. This process occurs when waves do not have enough energy to transport the eroded material – so it is left behind, forming a beach. 

F. Beaches help to absorb the energy of the waves, which slows down this process, protecting the coastline. 

Abrasion

Solution

Attrition

Hydraulic action

Chemicals in the rock are dissolved by weak acids in the sea water

Sand and pebbles in the waves are flung onto the rock, wearing it away like sandpaper

The energy of the waves forces air and water into the cracks in the rocks, weakening them and eventually breaking them up

The movement of the waves cause the eroded pieces of rock to collide into each other, causing them to become smaller and smaller, until they end up as shingle or sand.

What do you see in the picture?

1. Uprush
2. Backwash
3. Swash
4. Fetch

What do you see in the image? A beach and ...

What is the direction of the longshore drift. Explain your answer.

Bay

Arch

Beach

Spit

This beach formed because .... happened

1. Erosion
2. Deposition

Erosion

Deposition

Which 3 landforms do you see in this image?

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