demonstrate an understanding of the work of a river in eroding, transporting and depositing

•the hydrological processes (erosion, transportation  deposition) operate within rivers and drainage basins 

•erosion:

          •hydraulic action: force of wave hits the rock; the air is trapped by a wave in a crack and cracks it further due to hydraulic pressure 

         

          •abrasion: where rocks are picked by waves and thrown against the cliff

          •solution: where the rock is put into solution by weak acids

          •attrition: materials in the wave smash each other, becoming smaller and rounder

•transportation:         

          •traction: where larger, heavier material that makes up the river’s bedlam is rolled along

          •saltation: where the lighter material that makes up the river bedlam is bounced along the river bed 

          •suspension: where lighter material that makes up the river’s suspended load is carried by the river

          •solution: where dissolved material that makes up the river’s solute load in solution 

•deposition:

          •when river lose energy, it starts to drop it’s bed-load anywhere

                    •the heaviest material will be deposited first etc. 

          •deposition occurs: •a decrease in gradient and smoothness

                                         •a decrease in river flow as water drains away after lots of precipitation 

                                         •the river meets a large body of water

                                         •the river flowing more slowly on inside bends