Rivers definitions, GCSE geography 5.0 / 5 based on 2 ratings ? GeographyWater and riversGCSEAQA Created by: OaklasaurusCreated on: 17-11-15 17:14 buildings are modified to reduce flood damage (soft engineering) preperation 1 of 38 restrictions that prevent building on parts of land likely to be flooded flood plain zoning 2 of 38 schemes set up using knowledge of a river and its processes to reduce the effects of flooding soft engineering 3 of 38 the river's course is straightened - the meanders are cut out by building artificial, straight channels channel straightening 4 of 38 huge walls build across rivers, usually in the upper course dam 5 of 38 an artificial lake formed behind a dam resevoir 6 of 38 man-made structures built to control the flow of rivers and reduce flooding hard engineering 7 of 38 the path of a river as it flows downstream river course 8 of 38 the process that has the most impact dominant process 9 of 38 erosion that widens the river valley lateral 10 of 38 erosion that deepens the river valley vertical 11 of 38 the orange lines all over maps contour lines 12 of 38 large bend in a river meander 13 of 38 wide flat valley next to a river that floods flood plain 14 of 38 natural embankments (raised bits) along river channel edges levees 15 of 38 shows how the discharge at a certain point along the river changes over time hydrograph 16 of 38 the amount of water that flows in a river per second, measured in cumecs river discharge 17 of 38 highest discharge in the area being looked at peak discharge 18 of 38 the increase in river discharge as rainwater flows into it rising limb 19 of 38 decrease in discharge as it returns to normal falling limb 20 of 38 the delay between peak discharge and peak rainfall lag time 21 of 38 rainwater soaking into the ground and into a river infiltration 22 of 38 water flowing quickly over land and into water surface runoff 23 of 38 the force of water breaks particles away from the river channel hydraulic action 24 of 38 eroded rocks picked up by the river scrape and rub against the channel, wearing it away abrasion 25 of 38 eroded rocks smash into eachother and break into smaller fragments attrition 26 of 38 some types of rock are dissolved and carried in the river (erosion process) solution 27 of 38 large particles like boulders are pushed along the river bed by the force of the water traction 28 of 38 pebble sized particles are bounced along the river bed by the force of the water saltation 29 of 38 small particles are carried along in the water suspension 30 of 38 soluable materials are dissolved and carried (transportation process) solution 31 of 38 when a river drops eroded material deposition 32 of 38 how steep the land is relief 33 of 38 when a river spills over the banks flood 34 of 38 a flood without a warning flash flood 35 of 38 a higher demand for water than a supply water deficit 36 of 38 a higher supply for water than demand water surplus 37 of 38 soil that can't absorb any more water saturated soil 38 of 38
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