1. Coastal ErosionCoastal Erosion
Causes of erosion, coastalCauses of erosion, coastal
landformslandforms

2. Exam Q
• Name and describe two processes of erosion which
affect cliffs.
• 1..................................................................................................
....................................................................................................
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• 2..................................................................................................
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[4marks] – 1 mark per named process, 1 per
explanation

3. Coastal erosion: recap
• There are 4 different types of coastal
erosion.
•
• Abrasion (aka Corrasion)
• Hydraulic action
• Corrosion (aka Solution)
• Attrition
• What’s the difference?

4. Types of coastal erosion

5. The secret art
of Coastal Kung Fu Fighting!
Hydraulic Action: make punching movements with hand -
demonstrates force of water hitting cliff.
Abrasion: make a throwing gesture with hands like you are
throwing dealing cards very rapidly
Attrition: make 2 fists, and then bring them towards each
other, hitting each other, then open hand to resemble a
stone breaking.
Corrosion: have arms out stretched in front of you, waving
fingers, and moving arms downwards. Make a sound of
something dissolving.

6. Coastal landforms
• Coastlines are constantly changing shape
because of erosion and deposition.
• They are dynamic and unsteady
• The sea is the biggest cause of change, it
both erodes and deposits material
The amount of coastal change depends on:
1) the types of waves affecting the coast
2) the geology (rock type) of the coastline

7. The geology of the
coast affects how much
it is eroded.
More resistant rocks
(e.g. chalk) erode more
slowly than less
resistant rocks (e.g.
clay, limestone)
This forms headlands /
cliffs and bays/
beaches

8. Answer these exam questions in your books using full sentences.
1) Describe the image (3 marks)
2) How was this formed? (2marks)
3) What might the impact be on people? (2marks)

9. Homework
• Find an example of a coastline that is
being eroded.
• Need to include:
» Name of coast
» What is happening to it (e.g. forming a beach,
cliff collapsing, etc.)
» How does it effect people here?
• Due:

10. Homework
• Find an example of a coastline that is
being eroded.
• Need to include:
» Name of coast
» What is happening to it (e.g. forming a beach,
cliff collapsing, etc.)
» How does it effect people here?
• Due: