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4 Cards in this Set
- Front
- Back
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F. |
Waterfalls are features of erosion usually found in the upper course of a river |
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E. |
An irish example of a waterfall is glencar waterfall co. Leitri! |
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E. |
Waterfalls are formed when a river flows over bands of hard and soft rock. The soft rock erodes more quickly than the hard rock. The processes of erosion that occur are hydraulic action and abrasion. A notch is eroded where the hard rock and soft rock meet. over time this is further eroded. A vertical drop/develops. The river flows over the rock. Falling water and rocks then erode a plunge pool at the base of the waterfall. The hard rock above the plunge pool is undercut and eventually collapses into the plunge pool. Overtime the waterfall will erode upstream. |
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D. |
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