WEALD River Erosion Quiz

What is the process in which rocks carried by the river wear down the river bed and banks?

• Abrasion

• Attrition

• Solution

• Hydraulic Action

What is the dominant direction of erosion in the upper course of the river?

• Vertical

• Lateral

What is the term for the sideways erosion by a river, like on the outside of a meander?

• Lateral erosion

• Vertical erosion

• Attrition

• Abrasion

Which process involves rocks transported by the river colliding and becoming smaller and rounded?

• Attrition

• Solution

• Hydraulic Action

• Abrasion

What is the term for the downward erosion of a river bed?

• Lateral erosion

• Vertical erosion

• Attrition

• Abrasion

Which process involves soluble particles being dissolved into the river?

• Attrition

• Solution

• Hydraulic Action

• Abrasion

What is the force of water compressing air in cracks, weakening river banks?

• Abrasion

• Attrition

• Solution

• Hydraulic Action

In which course of the river does meander migration widen the valley?

• Upper course

• Middle course

• Lower course

• None of the above