What does a contour line on a topographic map represent?

• A. Vegetation pattern.
• B. Road networks.
• C. Weather patterns.
• D. Elevation and the shape of the terrain.

Answer: (D)

Contour lines on a topographic map show elevation and the shape of the terrain. Each line connects all points that are at the same height above sea level, so you’re reading elevation directly from the map. The spacing between lines reveals slope: lines that are close together indicate steep terrain, while lines that are far apart indicate gentler slopes. The pattern of lines also shows features like ridges, valleys, and depressions, with closed loops typically representing hills or mountains and V-shaped patterns pointing uphill beside streams. Contour lines never cross, and elevation values are often labeled on the more prominent lines to help you read height.

Vegetation patterns, roads, and weather patterns have their own symbols and representations on maps, so contour lines specifically convey elevation and terrain shape.