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A. contour line) A contour line or isoline connects points on a map that are of equal value. Examples of contour lines or isolines are isobars (pressure) and isotherms (temperature). Perhaps the prototypical example of a contour line is that which connects points of equal elevation (that is, height above sea level).

Option (a).contour line connects points of equal elevation.

Contour line

  1. A contour line exists as a bar drawn on a topographic map to demonstrate ground elevation or depression. A contour interval exists as the vertical distance or disparity in elevation between contour lines. Index contours exist bold or thicker lines that occur at every fifth contour line.
  2. A contour line represents the outline of a form, as well as interior structure, without the usage of shading. A fundamental cause of the drawing is, contour lines are usually the first method children adopt to draw people, houses, and trees.

Characteristics of Contours

  • Must complete on themselves, on or off the map.
  • The slope between them exists considered uniform.
  • The distance between them demonstrates the steepness of the slope, gentle or steep.
  • Irregular represents rough, and smooth signifies gradual slopes.

Hence, Option (a).contour line connects points of equal elevation.

To learn more about the Contour line refer to:

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