Contour lines on a map signify what geographic feature?

• A. River pathways
• B. Elevation changes
• C. Plant cover
• D. Cultural landmarks

Answer: (B)

Contour lines on a map represent elevation changes within a given area. These lines connect points of equal elevation and are key in understanding the topography of the landscape. When analyzing a topographic map, the spacing between contour lines indicates the steepness of the terrain; closely spaced lines suggest a steep slope, while widely spaced lines indicate a gentler incline. This ability to convey changes in elevation is crucial for activities like hiking, land navigation, or conducting search and rescue operations, as it helps responders assess the terrain they may encounter in the field.

The other options, while they refer to relevant geographical features, do not accurately represent what contour lines depict. Rivers may be indicated on maps through blue lines, plant cover is often shown through coloring or shading, and cultural landmarks are typically marked with symbols or labels, rather than through contour lines.