Geography - Rivers 0.0 / 5 ? GeographyWater and riversGCSEEdexcel Created by: ctrevittCreated on: 09-04-16 11:11 What is Hydraulic Action? The pressure of water exerting its force and causes erosion. An example of this is a waterfall with the pressure causing a plunge pool 1 of 7 What is Abrasion Wearing away of the river bed and bank by the load carried in the river 2 of 7 What is Attrition Erosion caused when rocks and boulders transported by waves bump into each other and break up into smaller pieces 3 of 7 What is a bar? When a spit grows across a bay and forms a lagoon. 4 of 7 What is a bay? An area of soft rock which has been eroded away in the middle of two hard rock headlands, forming a dip inwards which is a bay. 5 of 7 What is a constructive wave? Found on low-angled beaches. Strong swash, weak backwash 6 of 7 What is a destructive wave? Found on steep beaches. Strong backwash, weak swash 7 of 7
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