Question

10. What does a profile of a river from its headwaters to its mouth typically show?

a. an increase in gradient downstream
b. a straight-line profile reflecting a constant decrease in gradient
c. an abrupt increase followed by a gradual decrease
d. a curved shape that flattens out downstream

Answer 1

c. an abrupt increase followed by a gradual decrease

Explanation:

At the headwater, the flow gradient starts high but then slowly decreases as the river moves downstream to its mouth.