Which of the following is correct 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 is highest at the mouth and lowest at the headwaters.

Question

Quizplus · Accepted Answer

The longitudinal profile of most rivers is concave in shape, meaning it is steeper at the headwaters and becomes gentler as it approaches the mouth. This is because erosion is greater at the upper reaches of the river, where the water is moving faster and carrying more sediment, and decreases as the river slows down and deposits its sediment near the mouth.

Which of the Following Is Correct of the Longitudinal Profile