The River Valley Flashcards
(2 cards)
0
Q
Explain why the upper course of a river valley has a different cross profile from the lower course.
A
In the upper course of a river valley, vertical erosion is dominant.
This makes the valley deeper than in the lower course.
In the lower course of a river valley, lateral erosion is dominant.
This makes the valley wider than in the upper course.
1
Q
What is the difference between the long profile and the cross profile of a river?
A
The long profile shows how the gradient (steepness) of a river changes along its length.
The cross profile shows what a cross section of a river looks like at a specific point.
