Question

How is a waterfall formed?
Please answer.
Right answers will be marked as brainliest.

Answer 1

Waterfall formed in the streams flow from soft rock to hard rock.

Answer 2

 $<B><font color = "red"> FORMATION OF WATERFALL$

$<I><font color = "blue">the formation of waterfall occurs where layer of harder rock overlays a layer of softer layer.$

$<I><font color = "black">when flow of the river passes on the softer layer , it is able to erode it as faster rate , forming a step in the river bed . The force of hydraulic action does two things .further erosion forms the plunge pool and notch bigger over time . As a notch thrives , there is not ample support under the harder rock and so it collapses into the plunge pool. This adds rocks and boulders to the plunge pool, and so the process of corrasion works with hydraulic action to further erode the plunge pool and notch . The processes of erosion continues , further eroding out the notch and plunge pool.Evenually the harder rock above will collapse again , meaning that the waterfall retreat upstream over time. As it retreats , it leaves behind a steep sided gorge .$

$<marquee> <font color = "blue"> hope it helps$☺