Rivers-waterfalls

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What is the key process occurring in the formation of waterfalls?
Erosion
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What is the ledge created in a waterfall called?
The overhang
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What are the two types of rock in a waterfall?
Hard rock e.g. Whinstone and soft rock e.g. Sandstone
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What is the name of the body of water at the bottom of the waterfall?
The plunge pool
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Which specific processes of erosion are most common in the development of a waterfall?
Abrasion and hydraulic action
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What is the process of the waterfall retreat?
As the plunge pool is eroded backwards, the overhang collapses due to lack of support and the whole waterfall appears to retreat backwards. This creates a gorge on either side.
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If the overhang is the ledge, then what is the undercut?
The eroded cut out area of soft rock underneath the overhang
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Other cards in this set

Card 2

Front

What is the ledge created in a waterfall called?

Back

The overhang

Card 3

Front

What are the two types of rock in a waterfall?

Back

Preview of the front of card 3

Card 4

Front

What is the name of the body of water at the bottom of the waterfall?

Back

Preview of the front of card 4

Card 5

Front

Which specific processes of erosion are most common in the development of a waterfall?

Back

Preview of the front of card 5
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