THE WEARING AWAY OF THE SIDES AND BOTTOM OF A RIVER’S CHANNEL IS CALLED

• A. hydraulic action
• B. corrosion
• C. attrition
• D. corrasion ✓
• E. solution

The wearing away of the sides and bottom of a river’s channel is called corrasion. Corrasion, also known as abrasion, is the process by which the river’s load of sediment wears away the bed and banks of the channel through friction and impact. This erosion process is particularly effective in areas where the river carries a large amount of coarse material that can act as a cutting tool against the bedrock or softer sedimentary layers.