Geography Key Terms 0.0 / 5 ? GeographyKey TermsGCSEAQA Created by: abigail23rdCreated on: 21-05-20 11:43 Drainage Basin An area of land drained by a river and its tributaries 1 of 28 Watershed The area that drains into a single river 2 of 28 Tributary A small river or stream that joins a river 3 of 28 Confluence The point at which two rivers or stream join 4 of 28 Mouth The point where the river comes to the end 5 of 28 Infiltration Process by which water on the ground surface enters the soil 6 of 28 Surface run-off Water from rain, snow-melt or other surfaces that flows over the land surface 7 of 28 Percolation The gravity flow of water within the soil 8 of 28 Evaporation When a liquid substance becomes a gas 9 of 28 Condensation When water vapour (gas) becomes a liquid 10 of 28 Precipitation Moisture falling to the earth 11 of 28 Discharge Volume of water flowing through a river channel 12 of 28 Velocity The speed of the water flow 13 of 28 Saturated Soil A condition in which all easily drained voids (pores) between soil particles are temporarily or permanently filled with water 14 of 28 Abrasion (Erosion) Material being transported wears away at a surface over time 15 of 28 Attrition (Erosion) When the bed load is eroded by itself and the bed 16 of 28 Solution (Erosion) Minerals are dissolved in the water and carried along 17 of 28 Hydraulic Action (Erosion) Sheer power of the waves as they smash against the cliff 18 of 28 Erosion Process that breaks things down 19 of 28 Weathering Breaking down or dissolving of rocks and minerals on the surface of the earth 20 of 28 Biological Weathering Weakening and subsequent disintegration of rock by plants, animals and microbes 21 of 28 Mechanical Weathering Breaking big rocks into little ones 22 of 28 Chemical Weathering Rain water reacting with the mineral grains in rocks to form new minerals (clays) and soluble salts 23 of 28 Deposition Processes where material being transported by a river is deposited 24 of 28 Suspension (Transportation) Fine light material is carried along in the water 25 of 28 Saltation (Transportation) Small pebbles and stones are bounced along the river bed 26 of 28 Solution (Transportation) Minerals are dissolved in the water and carried along 27 of 28 Traction (Transportation) Large boulders and rocks are rolled along the river bed 28 of 28
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