Theme 2 Definitions continued 4.0 / 5 based on 1 rating ? GeographyPhysical ProcessesGCSEWJEC Created by: Emma KerriganCreated on: 08-10-14 21:25 Drainage basin The area of land drained by a river and its tributaries 1 of 24 Watershed A ridge of high land surrounding a drainage basin 2 of 24 Source The start of a river 3 of 24 Tributary A smaller river that joins a main one 4 of 24 Confluence Where two rivers join 5 of 24 Mouth Where a river flows into the sea 6 of 24 River channel Where a river flows between two banks and over a bed 7 of 24 Erosion The wearing away of land 8 of 24 Hydraulic action The power of fast flowing water removing material 9 of 24 Abrasion Material is picked up by the river and rubbed against the bed and bank 10 of 24 Attrition Rocks on the riverbed roll into each other and become smaller and more rounded 11 of 24 Corrosion Acids in the water dissolve certain types of rock such as limestone 12 of 24 Transportation The carrying of material downstream by a river 13 of 24 Traction Large material is rolled along the bed 14 of 24 Saltation Smaller particles are picked up for a short distance and then dropped again bouncing 15 of 24 Suspension Very small particles are carried in the water making it look muddy or cloudy 16 of 24 Solution Some material that has been dissolved by corrosion 17 of 24 Deposition The dropping of material that the river is carrying when the flow slows down eg, when the river reaches the sea or on the inside of a meander bend 18 of 24 Delta Small islands created in the river mouth due to the deposition of material from the river when the flow slows down 19 of 24 Upper course river feature Waterfalls (erosional feature) 20 of 24 Middle course river feature Meanders (erosional and depositional feature) 21 of 24 Lower course river feature Deltas (depositional feature) 22 of 24 Flood When there is too much water reaching a river so it bursts its banks 23 of 24 Longshore drift Continual swash and backwash transports material sideways along the coast/beach 24 of 24
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