How do you represent relief by contours? Give examples with neat sketch

Contour lines are a common method of representing relief, or the shape and elevation of land surfaces, on a map. Relief refers to the three-dimensional shape of the Earth's surface, including its elevations, valleys, and peaks. Representing relief on a flat map is a challenge and requires a projection that converts the curved surface of the Earth into a flat, two-dimensional image.

Contour lines are lines that connect points of equal elevation on the Earth's surface. They are used to show the shape and slope of land surfaces and provide a visual representation of the elevation changes of a specific area. Contour lines are drawn at specific intervals, called contour intervals, which are determined by the scale of _____ __________ ____ _________ _________ __________ _________ ____.
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