Abrasion/Corrasion
Corrasion is when rock caught up in ❌ waves are hurled at a cliff face – causing it to be chipped and gauged.
Abrasion is the ❌ effect of loose rocks being scraped along bare rock. It often ❌ and polishes the rock.
The sediment carried by a river scours the bed and banks. Where ❌ exist in the channel floor the river can cause ❌ to spin around and turn hollows into potholes.
This process is most effective during times of ❌ and is the major method by which the river erodes both vertically and horizontally. If there are hollows in the riverbed, pebbles are likely to become trapped. Turbulent eddies in the current can swirl pebbles around to form potholes. This form of erosion occurs most often during times of ❌ river flow, bed load being used as an abrasive agent, scratching and scraping of the solid bedrock.
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causes rough edges
causes rough edges