explain the formation of water falls
Answers
Often, waterfalls form as streams flow from soft rock to hard rock. This happens both laterally (as a stream flows across the earth) and vertically (as the stream drops in a waterfall). In both cases, the soft rock erodes, leaving a hard ledge over which the stream falls.
Answer:
Waterfalls:-
Waterfalls often form in the upper stages of a river where it flows over different bands of rock. It erodes soft rock more quickly than hard rock and this may lead to the creation of a waterfall.
Formation of a waterfall:-
:-The soft rock erodes more quickly, undercutting the hard rock.
:-The hard rock is left overhanging and because it isn’t supported, it eventually collapses.
:-The fallen rocks crash into the plunge pool. They swirl around, causing more erosion.
:-Over time, this process is repeated and the waterfall moves upstream.
;-A steep-sided gorge is formed as the waterfall retreats.