Four types of river erosion

GCSE · Geography · OCR · P1.LS.2 — River landscape — processes (erosion, transportation, deposition) and landforms (V-shaped valleys, waterfalls, meanders, oxbow lakes, floodplains)

Question

Name and describe two processes by which a river erodes its channel. [4 marks]

Mark scheme (2 × named + described):

Hydraulic action: the force of moving water and compressed air in cracks breaks apart the bed and banks (B1+B1).
Abrasion: sediment carried by the river scrapes and wears away the bed and banks, like sandpaper (B1+B1).
Accept: attrition; solution — with accurate descriptions.

4 marks · take your time before peeking.

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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.