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22 Cards in this Set
- Front
- Back
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alluvium
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deposited sediment
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slip-off-slope
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gentle slope on inside of meander
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load
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the material which makes up the rivers bed load
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velocity
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the speed of the river
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revetments
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artifical levees to prevent erosion
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river cliff
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the eroded side of the bank located on the inside of the meander
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river beach
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the outside of the meander where deposition occurs
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inter-locking spurs
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in the upper course of the river, erosion occurs but hard rock is left,creating inter-locking spurs
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ox-bow lake
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a horseshoe-shaped lake next to a river
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delta
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found at the mouth of large rivers
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gradient
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the steepness of a river
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lateral eroision
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Lateral erosion in a river is the wearing away of the sides of the river. This erosion makes the channel deeper.
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vertical eroision
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erodes side ways,causing the river to widen
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Depth
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increases downstream, a result of being joined by a number of tributaries
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Distributaries
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finger-like river channels which branch away from a main river channel in a delta.
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Estuary
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the tidal mouth of a river, with large, flat expanses of mud exposed at low tide.
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Gorge
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a steep-sided, narrow rocky valley marking the retreat of a waterfall
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Hydraulic Action
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The sheer force of the water by itself can erode material from the bed and banks of the river channel.
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plunge pool
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the deep pool below a waterfall.
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pot holes
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holes eroded in the solid rock of a river channel. They are drilled by pebbles caught in eddies in the river.
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rapids
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found where the river meets a band of resistant rock and usually precede a waterfall.
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Confluence
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the point at which rivers meet.
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