geography flashcards 0.0 / 5 ? GeographyvocabGCSEAQA Created by: Jessica8Created on: 17-10-16 21:08 drainage basin the area of land drained by a river and its tributaries 1 of 33 tributaries a stream or small river that joins to a larger one 2 of 33 solid creep where individual particles of soil move slowly down a slope 3 of 33 flows where masses of soil or rock, usually mixed with water, flow like liquid downhill 4 of 33 discharge the volume of water flowing in a river, measured in cubic metres per second {cumecs} 5 of 33 sliding where materials move rapidly down slope in one go, like a landslide 6 of 33 source the starting point of a stream or river, often a spring or lake 7 of 33 interlocking spurs an area of higher land jutting out of a steep valley sides in a rivers upper course 8 of 33 plunge pool a hollow under a waterfall created by erosion and filled by water 9 of 33 gorge a steep, narrow valley with rocky sides 10 of 33 vertical erosion downward erosion like a river bed 11 of 33 meanders a bend formed in a river. 12 of 33 lateral erosion erosion where a river cuts sideways into its banks 13 of 33 river cliff a steep section of river bank, caused by fast-flowing water eroding the outside of a meander 14 of 33 slip off slope the gentle slope on the inside of a meander bend formed by deposition 15 of 33 point bar sediment laid down on the inside of a meander bend where the river flows slowly 16 of 33 cross-section a diagram showing the shape of a feature or landscape as if it was cut through sideways 17 of 33 neck the narrow ***** of land between the two closest banks of a meander 18 of 33 flood plains the flat land in a valley floor each side if the river channel, which is sometimes flooded 19 of 33 migrate the movement of people or features such as a meander 20 of 33 alluvium fine sediment which are deposited by a river 21 of 33 levee a raised bank of sediment along the side of a river 22 of 33 reservoirs a large lake, usually artificial, used to store water 23 of 33 channelisation the deepening and/or straightening of a river to allow it to carry more water 24 of 33 infiltration the process where by water soaks into the soil and permeable rock 25 of 33 jet stream a fast-moving current of air in the upper atmosphere 26 of 33 hard engineering strategies using artificial structures to prevent river or coastal flooding 27 of 33 soft engineering flood defences that work with natural processes to reduce the risk and impact of coastal or river flooding 28 of 33 hydrograph a graph showing changes in a rivers discharge and rainfall over time 29 of 33 rising limb represents the rapid rise in water after a period of heavy rainfall 30 of 33 lag time the difference between the time of the heaviest rainfall and the point at which the river contains the largest amount of water 31 of 33 falling limb shows the reduction in the amount of rainfall reaching the channel 32 of 33 deposition a process where sediments are dropped by the river, glacier or waves that carried them 33 of 33
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