River Erosion Quiz A quiz about different types of river erosion. Can be used for GCSE or AS Geography. 4.0 / 5 based on 23 ratings ? GeographyRivers and fluvial processesASAll boards Created by: SophieCreated on: 29-10-09 14:11 Hydraulic action can lead to undercutting. True or false? True 1 of 3 Why do you find smaller rocks in the river's lower course, and larger rocks in the upper course? Due to attrition: the rocks collide with each other breaking apart, becoming smaller and rounded. Water rounds them as they travel down. 2 of 3 During corrosion, what is removed from the rock? Chemical ions 3 of 3
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