Success Criteria

By the end of the lesson, you should be able to:

• To know how to work out the local relief

• To be able to draw a cross section from a topographic map

Have a go at these questions in your workbook: 

1. Point A has an elevation of 945 meters, and Point B has an elevation of 675 meters. What is the local relief between these two points?

2. Point X is at an elevation of 320 meters, and Point Y is at 150 meters. If the horizontal distance between them is 2 kilometres, what is the local relief?

3. The contour lines of a map show elevations of 200 meters, 400 meters, and 600 meters. If Point C is on the 200-meter line and Point D is on the 600-meter line, what is the local relief? 

4. A peak is measured at 1,200 meters, while a nearby valley is at 450 meters. What is the local relief between the peak and the valley?

5. Point E is at a summit of 1,000 meters. Point F, located halfway down the slope, is at 600 meters. What is the local relief?

6. A cliff is shown with a top elevation of 820 meters and a base elevation of 240 meters. What is the local relief of the cliff?

7. Point G is located on the 1,050-meter contour line, and Point H is on the 850-meter contour line. Calculate the local relief between these two points.

8. A mountain pass sits at an elevation of 750 meters, while the nearby peaks are 1,200 meters high. What is the local relief between the pass and the peaks?

9. An island’s highest point is at 120 meters, and its coastal elevation is at sea level (0 meters). What is the local relief of the island?

10. A ridge has three peaks at 920 meters, 1,100 meters, and 1,320 meters. If the valley between the first and second peak is 780 meters and the valley between the second and third peak is 890 meters, calculate the local relief for each valley.

Copy: "A cross-section provides a side view, or profile, of a landscape. This view enables us to see how this shape of the land influences land use such as settlement, drainage and vegetation."