Definitions - 3. The top layer (with the least drag) moves...

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Definitions Coast: The strip of land where it meets the sea Coastline: The margin of land. The limit to which wave action takes place. Shore: The strip of land lying between the high and low water levels. Shoreline: The limit of the shore. The line where the shore and the water meet. Beach: A shore covered by a deposit of sand and/or pebbles. Factors Determining the Nature of Coasts 1. Wave action 2. Tidal currents 3. Nature of the rocks forming the coast 4. Height of the coast 5. Nature of the climate 6. Work of man Formation of Waves 1. Wind blows over the sea surface. 2. The surface of the sea exerts frictional drag on the lower layer of the wind.
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Unformatted text preview: 3. The top layer (with the least drag) moves faster than the lower layer and hence tumbles over it. 4. This causes a circular motion of wind energy that acts on the sea to create waves. Wave Erosion Wave erosion like river erosion involves 4 processes: 1. Abrasion/Corrasion: The wearing away of the sides and the bed of a river by the impact of the load. 2. Hydraulic Action: Erosion by the force of moving water. 3. Atrrition: The breaking down of the load by particles hitting against each other. 4. Solution/Corrossion: When minerals dissolve in water....
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