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The rock on the top of the waterfall is a hard rock, it is good to give an example such as Limestone
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GEOGRAPHY WORK Waterfalls The rock on the top of the waterfall is a hard rock, it is good to give an example such as Limestone. The rock underneath and behind the waterfall is a soft rock which can be easily worn away. Again, a good example of this is shale. HOW THE WATERFALL FORMS: A step is present in the soft rock which forces the water downwards. The water starts to erode as it is pushed down and creates a plunge pool. The water keeps eroding and the waterfall gets bigger. At this point the water starts undercutting the soft rock behind the waterfall. This process continues and hard rock is broken off as the waterfall retreats. Spray from the waterfall undercuts more. Meanders If something is in the way of a stream or river it has to go round it for example a tree or a rock. After this first bend, the river...
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