Question

What is river erosion and how does it work?

Answer 1

Erosion is the process that wears away the river bed and banks. Erosion also breaks up the rocks that are carried by the river. ... Hydraulic action - This is the sheer power of the water as it smashes against the river banks. Air becomes trapped in the cracks of the river bank and bed, and causes the rock to break apart.

Answer 2

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River Erosion is the river erodes away the bed and banks of its channel vertically and laterally.

Rivers erode in four ways: Abrasion or corrasion - This is when large pieces of bedload material wear away the river banks and bed. Attrition - This is when the bed load itself is eroded when sediment particles knock against the bed or each other and break, becoming more rounded and smaller.