Unit 5.5 - Geo

Which landform is not create by a river?

• meander

• tarn

• gorge

• oxbow lake

Which 2 landforms are likely to be found in the upper course of a river?

• meander

• v-shaped valley

• oxbow lake

• gorge

In which part of a river's course are meanders found?

• upper and lower

• upper and middle

• middle and lower

• only the middle

In which part of a river's course are the most waterfalls found?

• upper and middle

• upper

• middle and lower

• middle

Which part of a river's course are gorges found?

• upper

• upper and lower

• lower

• middle and lower

Pick the option that explains how a v-shaped valley is formed in the upper course.

• a steep valley is deposited then time changes it into a less steep valley

• a long wide valley is eroded then floods make it wider

• a u-shaped valley is formed first then deposition makes it v-shaped

• a steep valley is eroded then rain washes away soil and stones from the sides

Which statement is correct?

• A waterfall forms because there is soft rock below the hard rock.

• A waterfall forms because there is a hole in the river bed.

• A waterfall forms because there is hard rock below the soft rock.

• A waterfall forms because there is deposition under the current.

What is the hollow called that forms under a waterfall?

• a waterfall

• a gorge

• a plunge pool

• a ledge

In the process that creates a waterfall, a structure of hard rock is left above the eroded soft rock. What is the structure of hard rock called?

• a waterfall

• a gorge

• a plunge pool

• a ledge

How does a water fall create a gorge?

• the softer rock erodes slowly

• rain washes the stones and soil from the sides

• water tumbles over a ledge of hard rock

• it carves out a gorge as it retreats upstream