What does a contour line on a map represent?

• A. Distance
• B. Temperature
• C. Population
• D. Elevation

Answer: (D)

Contour lines represent elevation. They connect points that are the same height above sea level, so they reveal the shape of the land’s relief. By looking at how these lines are spaced and shaped, you can tell where the land rises, where it’s flat, and where it drops. Close spacing means a steep slope, while wider spacing indicates a gentler slope. The lines also form patterns that show features like hills, valleys, ridges, and depressions, and they’re usually labeled with the elevation value of that line.

Distance on a map is shown by the map’s scale, not by contour lines. Temperature would be shown with isotherms or color shading on weather maps, and population is depicted with data overlays like shading or dot density, not by contour lines.