Presentation on theme: "Coasts are different because of EEEEROSION CCCCoastal Erosion is the wearing away of the land by the sea. DDDDifferent types of rocks wear."— Presentation transcript:
Coasts are different because of EEEEROSION CCCCoastal Erosion is the wearing away of the land by the sea. DDDDifferent types of rocks wear away at different speeds and in different ways.
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
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.