CST Level 1 Land Surveyor Certification Practice

Which type of map uses contour lines to show the shape of the earth?

1. Photogrammetric maps

2. Topographic maps

3. Engineering maps

4. Geographic maps

The correct answer is: Topographic maps

Topographic maps are specifically designed to illustrate the three-dimensional shape of the earth’s surface in two dimensions. They achieve this through the use of contour lines, which represent elevation and the relief of the terrain. Each contour line connects points of equal elevation, allowing users to visualize mountains, valleys, and slopes. This detailed representation helps in understanding the topography and is essential for various activities, such as hiking, land development, and environmental studies. In contrast, photogrammetric maps rely on aerial photographs to create a representation of the ground surface, and while they provide valuable information about land features, they do not utilize contour lines in the same manner. Engineering maps focus on specific projects and may include features relevant to construction, but they do not necessarily emphasize contour lines. Geographic maps (also known as general reference maps) depict broader geographical elements, and while they may show physical features, they typically do not include the detailed contour lines found in topographic maps.