Waterfalls and Gorges

Waterfalls and gorges are closely linked as erosional features. Explore how each are formed and the different types of erosion at work.

Earth Science - Geology - Learning Points.

There are four forms of river erosion: attrition, abrasion, hydraulic action and corrosion.

In the upper course of a river vertical erosion creates steep valleys, and uneven riverbeds form rapids and interlocking spurs.

Waterfalls are formed when a soft layer of rock is eroded beneath a harder layer of rock creating an overhang.

When the overhang eventually collapses and the waterfall retreats, a steep-sided gorge remains.

A Twig Context Film.
Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.