Rivers Flashcards
1
Q
Explain/deseribe the formation of one feature/landform of river erosion.
A
Waterfalls form in the youthful stage of a river due to differential erosion, where soft rock erodes faster than hard rock. Hydraulie action is the main force, with moving water wearing away the softar rock, while abraion uses the river’s load to further erode the bed and banks, shaping the plunge pool. As the river carries its load ovar the fail, it deepens the plunge pool. Solution erodes the back wall, creating an overhang of hard rock that eventually collapses into the plunge pool.This process repeats causing the waterfall to retreat up stream forming a gorge through headward erosion .
