What do contour lines on a topographic map represent?

• A. Points of Equal Elevation
• B. Road Networks
• C. Political Boundaries
• D. Weather Patterns

Answer: (A)

Contour lines connect all points that sit at the same height above sea level, so they let you read the shape of the land on a flat map. The spacing between these lines tells you how steep the terrain is: lines that are close together mean a steep slope, while lines that are farther apart indicate a gentler slope. The patterns of the lines reveal features like hills, valleys, and ridges—closed loops usually mark hills, and the lines bend to show valleys. When a contour line crosses a stream, the small V formed points upstream, helping you infer water flow direction. The heavier, labeled lines show specific elevations, and the constant difference between consecutive lines is the contour interval, which helps you calculate how high or low a location is relative to another point.

Other map features like road networks or political boundaries aren’t about elevation, and weather pattern lines are a different type of symbol, so they don’t describe terrain relief the way contour lines do.