Potholes

Question 1

What processes cause a pothole

Answer 1

Vertical erosion as they occur in the upper course where it is high above base level (high gpe).
Abrasion- pebbles carried by the river are swirled around the river bed

Question 2

How are potholes formed

Answer 2

The actions erode the rock on the river bed forming potholes. Over time they may widen and join with others to form one large pothole. The whole river bed is widened.

Question 3

Diagram of potholes

Answer 3

Look in folder

Question 4

Example of a pothole

Answer 4

Archbald pothole Pennsylvania- glacial pothole, diameter of 24m by 42 m

Question 5

What is a pothole

Answer 5

Small circular holes found at the bottom of the river bed in the upper course, the vary in diameter from a few cm to meters