Water on the Land Key Words 0.0 / 5 ? GeographyWater and riversGCSEAQA Created by: puntm003Created on: 14-02-14 15:26 Alluvium Tiny bits of sand and silt in the lower course of a river 1 of 13 Abrasion Occurs when the load of the river repeatedly hits the bed and banks causing some material to break off 2 of 13 Attrition Stones and boulders carried by the river crash into each other causing them to become rounder, smoother and smaller 3 of 13 Solution Some types of rock (e.g. limestone and chalk) can be dissolved by river water 4 of 13 Hydraulic Action The sheer force of the water hitting the bed and backs. this is most effective when the river is in flood 5 of 13 Groundwater Flow Water moving underground through joints and pores in the rock 6 of 13 Plunge Pool The deeper part underneath a waterfall where the rock is eroded by hydraulic action 7 of 13 Saltation Small rocks and pebbles rolling along the river bed 8 of 13 Slip-off slope The inside bend of a meander where the water flow is slower so the bed-load is dropped and forms a river beach/ slip-off slope 9 of 13 Solution Dissolved rocks in a river 10 of 13 Suspension Tiny bits of rock suspended in the river water 11 of 13 Watershed The boundary between two drainage basins marked by a high ridge of land 12 of 13 Confluence The point at which two rivers join 13 of 13
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