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A map is defined as a diagrammatic representation of an area of land or sea as well as physical features of that area such as roads, cities, mountains, and other land masses.
A topographic map is a large-scale map showing quantitative information about the shape or elevations of the area being mapped.
Contour lines designate areas on a topographic map that share the same elevation. Contour lines are observed as concentric circles. This makes sense as mountains or hills tend to have greater areas of low elevation at their valleys (or bases) than towards the top of the mountain or hill.
Contour lines that are close together represent a sharp slope or difference in elevation and "fairly steep." Conversely, contour lines that are spread apart indicate a gradual slope that is "relatively flat."
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