Question

Differentiate between index contours and intermediate contours

Answer 1

Explanation:

In most topographic maps every 5th contour line is drawn in bold print or wider than other contours. Such lines are called index contour lines. ... Contour lines (thinner lines) between index contours are called intermediate contour lines. In the map shown below, the elevation difference between index lines is 100 meters.

Answer 2

Answer:

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Explanation:

Such lines are called index contour lines. They are usually labeled with their corresponding elevations. Contour lines (thinner lines) between index contours are called intermediate contour lines. ... The elevation difference or vertical distance between two adjacent contour lines would be 20 meters (100 : 5 = 20).