Question

How are waterfalls are formed? 50 words for class 6 students

Answer 1

Answer:

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.