Study Figure 15, a diagram showing the long and cross profiles of a typical river and its valley
Figure 15
Height
(m)
Source
Sea
Mouth
Describe how the cross profile of the river valley changes downstream.

Match the graph type to its description. 1. uses symbols to describe information pie 2. compares different quantities at the same point in time line 3. compares increases and decreases in a quantity over a period of time bar 4. shows the relationship of parts to each other and to the whole pictograph