Which of the following is true of the longitudinal profile of most rivers?
A)it always changes at a constant rate from the headwater region to the sea.
B)it is convex in shape.
C)it is concave in shape.
D)it is gentle upstream and steep downstream.
E)it has a length to width ratio of 5:1

Question

Quizplus · Accepted Answer

The longitudinal profile of most rivers is concave in shape, meaning it is gentle upstream and steep downstream. This is because erosion is more rapid in the upper course where the river has more energy, and slows down as the river reaches the middle and lower course where the gradient is flatter.

Which of the Following Is True of the Longitudinal Profile