Slope, or percent of grade.
A plain or flat area on a contour map is recognized by contour lines. Thick contour lines have elevations printed on them periodically. They can also use supplemental contours that represent smaller vertical distances using dashed lines.
When contour lines are close together the land is steep
The land is steep if the contour lines are close together
Where the slope is steep the contour lines will come close together.
On a topographical map, a contour line indicates a change in elevation. When the lines are close together, the elevation is changing rapidly.
elevation
If the contour lines on a topographic map are close together, that area is a steep slope. If the contours have wide spaces in between then the terrain is relatively flat. Many close contour lines mean the elevation is changing rapidly.
If the contour lines on a topographic map are close together, that area is a steep slope. If the contours have wide spaces in between then the terrain is relatively flat. Many close contour lines mean the elevation is changing rapidly while sparse contour lines mean elevation changes very little.
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.
isopach lines are contour lines that connect areas of equal ground thickness.
Contour lines help for you to see different elevations in certain areas. Contour lines could be useful to hikers to help plan their next hiking trip by giving them an idea of what the land is like.
If the contour lines on a topographic map have wide spaces in between and are further apart then the terrain is relatively flat. If the contour lines are close together then the terrain forms a steep slope.