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River Landscape

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• .Erosion
• The river erodes the landscape by a number of processes:
• 1.Hydraulic action is erosion by the power of moving water. The faster the water moves, the more it erodes. The material that is eroded is carried along by the river and is called its load.
• 2. Abrasion is a type of erosion caused by the river’s load striking the bed and banks of the river. The load is carried by the flowing water. If the channel is made up of hard rock, it takes longer to erode.
• 3.Solution happens when the water slowly dissolves parts of the river channel. For example, limestone is dissolved when carbonic acid is present in the water.
• 4. Attrition happens when rock and stones carried by the river strike off each other. As a result, they are worn down and become smooth and round.