Rocks in the river being thrown against the river bed and banks, knocking more pieces off.
What happens on the outside bed of a meander? 3 things.
The water is moving faster, so erosion occurs, creating a river cliff.
Explain the formation of a levee.
Everytime a river floods, sediment is dropped, the larger material first and the smaller is dropped furthest away. Over time the larger material builds up.
What erosional feature is created at the bottom of a waterfall?
Plunge Pool
What happens on the inside bend of the meander? 3 things.
The water is moving slowly, so deposition occurs, creating a river beach.
What is traction?
Rocks in the river being rolled along the river bed.
Name the 3 courses of a river.
Upper, middle and lower.
What is a confluence?
The exact point a tributary meets a larger river.
In what course of a river would you find a levee?
Lower
What is hydraulic action?
The sheer force of the water eroding the side of the river bed and banks
What is saltation?
Rocks being bounced along the river bed.
What is attrition?
Rocks in the river bashing into each other, becoming more rounded.
What features of a river can you see on this map? Name 4.
Waterfall, confluecne, ox-bow lake, tributary, v-shaped valley, meander, floodplain
Explain the formation of an ox-bow lake.
Usually during a flood, the neck of the meander breaks through due to continued erosion and leaves the meander cut off.
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