The contour lines on a map indicate changes in elevation above sea level (or below, occasionally). The amount of change in elevation between lines is shown on the map legend, and will vary depending on the size of the map and the type of terrain.
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A contour line represents a specific elevation on a map, connecting points of equal elevation. A contour interval is the difference in elevation between two adjacent contour lines on a map. In other words, the contour interval specifies the vertical distance between contour lines.
Contour Lines are the imaginary lines drawn on a map to join places having same height above sea level.
Contour Interval is the interval between two successive contours.
The size in the change of elevation from one contour line to another is called the contour interval. It represents the vertical distance between each contour line on a topographic map. The contour interval helps in understanding the slope and elevation changes of the terrain being represented.
contour interval
The name for the elevation between two adjacent contour lines is known as the contour interval. It represents the difference in elevation between each contour line on a topographic map.
A contour interval of 20 meters means that each contour line on the map represents a change in elevation of 20 meters. These contour lines help to visualize the shape and steepness of the terrain. The closer the contour lines are together, the steeper the terrain, while further apart lines indicate a gentler slope.
The formula to calculate the contour interval of a map is the difference in elevation between two contour lines divided by the number of contour lines crossed. This provides the elevation change between each contour line on the map.