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Coasts are different because of EEEEROSION CCCCoastal Erosion is the wearing away of the land by the sea. DDDDifferent types of rocks wear.

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Presentation on theme: "Coasts are different because of EEEEROSION CCCCoastal Erosion is the wearing away of the land by the sea. DDDDifferent types of rocks wear."— Presentation transcript:

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2 Coasts are different because of EEEEROSION CCCCoastal Erosion is the wearing away of the land by the sea. DDDDifferent types of rocks wear away at different speeds and in different ways.

3 Types of erosion  Hydraulic Action. This is the force of water hitting the cliff and squeezing air into the cracks in the rock  Abrasion. This is the force of the bits of rock carried in the water blasting into the cliff.  Attrition. This is the process of rocks hitting each other and breaking into smaller rocks  Corrosion. This is a chemical reaction between the sea water and the minerals in the rocks

4 The secret art of Coastal kung fu ! 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. Sound effect of something dissolving is needed.


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