Geography Quiz: Waterfall Formation

What type of rocks are critical to the formation of most waterfalls?

• Basalt

• Limestone

• Sandstone

• Granite

Where are waterfalls normally found in a river system?

• Delta

• Lower course

• Middle course

• Estuary

What is an example of a hard rock that can contribute to the formation of waterfalls?

• Basalt

• Quartzite

• Marble

• Slate

How does the water erode the soft rock in the formation of a waterfall?

• By condensation

• By evaporation

• By hydraulic action

• By freezing

What process eventually causes the ledge of a waterfall to collapse into the plunge pool?

• Erosion

• Condensation

• Deposition

• Freezing

Which river in the northeast of England is a good example of a waterfall?

• River Mersey

• River Tees

• River Severn

• River Thames

What helps speed up the process of erosion in the formation of a waterfall?

• Concrete

• Vegetation

• Metal

• Debris

What is the primary process of erosion in the formation of a waterfall?

• Deposition

• Weathering

• Volcanism

• Hydraulic action

What gradually retreats upstream as a waterfall forms?

• Geyser

• Gorge

• Fjord

• Canyon

What type of rock is more resistant and overlays the softer rock in the formation of a waterfall?

• Granite

• Basalt

• Quartzite

• Slate