Question

Explain the following :-
(i) Contour lines.
(ii) Chorographic maps.
(iii) Planimetric maps.

Answer 1

Answer:

• Contour line

A contour line is a line drawn on a topographic map to indicate ground elevation or depression. A contour interval is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line.

• Chorographic maps

Chorography is the art of describing or mapping a region or district, and by extension such a description or map. This term derives from the writings of the ancient geographer Pomponius Mela and Ptolemy, where it meant the geographical description of regions..

• Planimetric maps

Planimetric maps consist of lines drawn around both man-made and natural features. These features are extracted from aerial photography—anything visible in the imagery can be digitized. Typical items found in planimetric maps include: Building footprints.

Explanation:

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