GCSE Rivers - Processes & Waterfalls / Gorges

In which section of the river are waterfall created?

• Middle Course

• Upper Course

• Lower Course

Waterfalls are landforms created by....

• Erosion

• Deposition

What type of erosion involves air particles that are forced into the cracks?

• Hydraulic Action

• Abrasion

• Attrition

• Corrosion

Attrition is where rocks in the river smash against each other and wear each other down

• False

• True

Which direction is most occurring in the upper course of the river?

• Lateral

• Vertical

• Diagonally

Waterfalls form along the course of a river where there is a steep change in __________?

• Water

• Gradient

• Geology

• Sun

For a waterfall to form there needs to be two layers of rock. Which way round must they be?

• Soft rock on top of hard rock

• Hard rock on top of soft rock

Which sentence is completely accurate?

• Waterfalls occur where there is a layer of soft rock and hard rock and both are eroded quickly
• Waterfalls occur where there is a layer of soft rock and the hard rock is eroded away (e.g. Shale)
• Waterfalls occur where there is alternating layers of hard and soft rock and the soft rock is eroded quicker (e.g. Shale)
• Waterfalls occur where rock is eroded quickly and the waterfall advances

The river undercuts the hard rock, creating an overhang.

• True

• False

What is the deep water called beneath a waterfall?

• Plunge bath

• Mermaids retreat

• Plunge pool

• Pool