Question

How is a waterfall formed?
Class 7th Question.
One line answer..

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Answer 1

Answer:

When a river erodes the underlying soft rocks faster than the hard rocks lying over it, the slope of the river bed suddenly and the water plunges down from great heights, forming a waterfall.

Answer 2

Answer:

The running water in the river erodes the landscape. When the river tumbles at steep angle over very hard rocks or down a steep valley side it forms a waterfall.