Waterfall formation 1

What do you see in this picture?

• Waterfall

• V-shaped valley

Waterfalls are created when river flows over alternate layers of hard and ________ rock.

Which of the following happens to make a step on the river bed?

• The moving water erodes the hard and soft rock at the same speed/rate

• The moving water deposits sediment on the river bed, creating a step

• The moving water erodes the soft rock faster than the hard rock

• The moving water erodes the hard rock faster than the soft rock

Which of the following type(s) of erosion is/are the dominant in the formation of a waterfall?

• abrasion

• hydraulic action

• corrosion

• attrition

What will be formed at the bottom/base of a waterfall after a period of strong fluvial erosion?

• plunge pool

• sand bar

• river cliff

• overhang