Waterfalls and Gorges.. cressie's and flodogs is WAY better..

a note from the authors of this page...
hey guys, this is madz and niky (our new funky n@mes) our page isn't great so i suggest u guys read flossie and cressie's as theirs is ALOT better than ours.. sorry Dan Dan, our page just isn't up to scratch, but we prom that we will try better next time. big :D love, nicz and maddz xxxxx
 
 
Definitions:

Waterfall - a sudden vertical or near vertical fall of water along a rivers course.
 
Gorge - deep, narrow, steep (often vertical) -sided valley which usually has a river occupying its floor.

Formation:

A diagram to show the formation of a waterfall..




A diagram to show the formation of a gorge..



Videos:

Heres a link to an animation of the formation of a gorge.. 
http://www.cleo.net.uk/resources/displayframe.php?src=307/consultants_resources%2F_files%2Fgorge.swf

Here is a link to a video on the formation of waterfalls and gorges (the guys a bit weird)  >  http://www.bbc.co.uk/learningzone/clips/404/   


Here are some annotations of:

A waterfall

A gorge



Below are some examples of real life gorges and waterfalls...

Descriptions:

Waterfalls - A waterfall has a very steep gradient, which causes the river to flow down it at a very high velocity. The rock type on the top tends to be hard rock and underneath soft rock. Additionally, a plunge fall often forms at the bottom of the waterfall where the gradient begins to level off.

Gorges - A gorge has very steep rocky walls which often have streams running through them.
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