Which type of map is not used to represent a surface?

A network map is not typically used to represent a surface. Instead, it focuses on the connectivity and relationships between nodes (points) and links (connections) within a system, such as transportation or utility networks. The primary purpose of a network map is to illustrate how various components interact with each other rather than depicting a physical or geographical surface.

In contrast, a topographic map represents the three-dimensional relief of a surface using contour lines to illustrate elevation changes. A choropleth map visualizes data using different shades or colors within predefined areas (such as districts or regions), effectively showing statistics like population density across a surface. A physical map highlights natural features of the earth's surface, such as mountains, rivers, and valleys. Each of these types of maps conveys surface information in distinct ways, while the network map is concerned with the connections rather than the physical characteristics of a surface.