Which term describes a representation of the terrain in three dimensions with suitable horizontal and vertical scales to provide a striking and realistic expression of topography?

• A. Relief model
• B. Contour line
• C. Planar map
• D. Elevation map

Answer: (A)

The idea being tested is showing terrain in three dimensions with horizontal and vertical scales that make topography stand out in a realistic way. A relief model does exactly that: it’s a physical, raised representation of the landscape where elevation is carved or built up on a base, and the horizontal scale and vertical exaggeration are chosen to make mountains, valleys, and slopes visually striking. This brings topography to life in a tangible form, letting you view the terrain from different angles and grasp depth and relief at a glance. By comparison, contour lines are flat map features that depict elevation with lines on a plane; an elevation map is a 2D depiction using color or shading for height; and a planar map is a flat representation without a true 3D relief.