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An Index Contour
Contour interval
The Relationship between the relief of an area and the contour interval on a map of the area is A contour line
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.
contour interval
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.
A contour line that is bold and labeled is called an index contour line. These lines help to easily identify specific elevations on a topographic map.
Contour.
The difference in elevation between one contour line and the next is called relief. Hope this helped. ;)
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.
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.
it is a contour line of elevation Control index contour, or just index contour