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An Index Contour
The elevation difference between two side-by-side contour lines is known as the contour interval. It represents the vertical distance in elevation between each contour line on a topographic map.
A topographic map shows different levels of elevation using contour lines to represent the shape of the land. Each contour line connects points of equal elevation, allowing users to visualize changes in terrain such as mountains, valleys, and plateaus.
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.
There will be several dark lines on a map, illustrating roads, power lines etc, BUT you probably mean contour lines. These are lines of equal altitude and are usually coloured brown for land, or blue for snow or ice fields.
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The darker contour lines on map are called index contour lines. Numbers that indicate elevations are often written on these lines.
A contour lines connects points of equal elevation.
An Index Contour
Contour interval
Additive drawing is the type of drawing most people considerwhen the topic of drawing comes to mind, and it includes making marks that indicate theedges of forms - called contour lines, and making marks to indicate shadow.
The change in elevation from one contour line to the next is called the contour interval. It represents the difference in elevation between two adjacent contour lines on a topographic map.
The difference in elevation between the highest and lowest contour lines on a topographical map is called a contour interval.
A line joining places of equal height is called a contour line. Contour lines are used on topographic maps to represent elevation and the shape of the terrain. They help visualize the topography of an area, indicating slopes and landforms. When contour lines are close together, it signifies a steep slope, while lines that are farther apart indicate a gentler slope.
contour interval
the contour interval
A line that follows the edge of form is a contour line. This type of art is called contour drawing. Doing it without looking at the paper is called blind contour drawing.