Flashcards
Landforms
Cards in this deck (14)
- 1Plunge PoolA hollow at the base of a waterfall caused by erosion (hydraulic action and abrasion)
- 2GorgeA steep sided valley created as a waterfall retreats backwards
- 3V-shaped ValleyA narrow steep-sided valley formed by the vertical river erosion.
- 4RapidsRapids result from a gentle gradient change caused by alternating bands of hard and soft rock.
- 5Knick PointsThe point on a river channel where there is a sharp change in channel slope, resulting from rejuvenation. The knick point marks the previous base level.
- 6Riffles and poolsRiffles are shallow sections of the channel which occur where velocity is lower between meander pools.
Pools are the deeper sections where velocity is greater on the outside of a meander bend. - 7MeanderA bend in the river.
- 8Ox-bow lakeA crescent shaped lake formed when a river cuts through the neck of a meander.
- 9LeveeA raised embankment formed by the deposition of material when a river floods its banks.
- 10DeltasThe result of a decrease in velocity when a river enters a lake or the sea. The coarsest sediment is deposited first and the finest last of all.
- 11WaterfallA vertical or near vertical drop of water resulting from a sudden change in river gradient due to alternating bands of hard and soft rock.
- 12PotholeA rounded hole abraded by load into the resistant rock river bed.
- 13Incised meanderA deep, steep-sided meander bend formed by severe vertical (downwards) erosion of an existing meander. They are usually the result of rejuvenation.
- 14floodplainThe area of land found either side of a river.