how a waterfall is formed
- Created by: rachelsrevision
- Created on: 16-04-14 17:20
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- explaining how a waterfall is formed
- stage 1 band of more resistant rock lies over less resistant rocks
- stage 2 less resistant rock is eroded more quickly, leaving a 'step' - the waterfall
- stage 3 more resistant rock is undercut, forming an overhang
- stage 4 overhang can no longer be supported, blocks of rock can fall down
- stage 5 powerful fall of water erodes plunge pool using fallen rocks
- stage 6 waterfall retreats upstream
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