Because contour lines show the places with same height above sea level, and if they branched, we should instead use another set of contour lines to show a height difference for the place where they should branch, and another to show the same height for the altitude above sea level as the original supposed branch, as if they branched, it would mean that there was a difference in altitude between them.
The main topographic map rules include contour lines never crossing, contour lines close together represent steep terrain, contour lines spread out represent flat terrain, and elevation is indicated by the contour lines.
The closer the contour lines, the steeper is the slope.
The land is steep if the contour lines are close together
indicated with different kind of contour numbers , which are showed in brown curved lines
How close together the brown contour lines are Yes, the closer the contours the steeper the slope. Flat land, by definition, has no contour lines.
The darker contour lines on map are called index contour lines. Numbers that indicate elevations are often written on these lines.
Hachured contour lines are contour lines with ticks pointing downslope that indicate a depression on a topographic map.
Index contour lines are thicker and usually have their elevation labeled. They help users quickly identify key elevations on a topographic map. In contrast, regular contour lines show the shape and elevation of the land but do not have specific labels.
The difference in elevation between two contour lines that are side by side is the contour interval. The contour interval is the vertical distance between two adjacent contour lines on a topographic map.
The definition of a contour interval is the difference in elevation between two consecutive lines.
The main topographic map rules include contour lines never crossing, contour lines close together represent steep terrain, contour lines spread out represent flat terrain, and elevation is indicated by the contour lines.
The closer the contour lines, the steeper is the slope.
The land is steep if the contour lines are close together
On a topographic map, contour lines that are closer together indicate a steeper slope.
The name for the elevation difference between adjacent contour lines is the contour interval.
contour lines
isolines