Sunday 22 April 2007

Waterfall Formation

Waterfalls form where the river bed has a layer of harder rock overlying the softer rocks.

  1. As water falls the softer rock is eroded much more quickly than the harder rock; therefore undercutting the harder rock.
  2. The hard, overrhanging rock eventurally collapses.
  3. The collapsed rocks fall into the plunge pool causing more erosion of the soft rocks and a deeper plunge pool.
  4. This goes on continuously causing the waterfall to retreat upstream.
  5. The waterfall leaves a steap sided gorge as it reatrets.
Waterfalls may also be caused as a result of:
  • Glacial Erosion
  • A Fall in Sea Level
  • Earth Movement

6 comments:

Unknown said...

so good !!!!!
thanks but i think you spelt steep incorrectly....steep not steap

Anonymous said...

I used this for my school project thanks a lot

Unknown said...

It has helped abit but have more results on it

kim jong un said...
This comment has been removed by the author.
kim jong un said...

i used it for one of the questions on my gcse paper but you spelt overhanging, eventually, steep and retreats wrong :)

Unknown said...

This helped me so much with my geography topic