Contour lines refer to the elevation of a line as it runs through a mapped area. For instance a 1,000ft. contour line might meander through an open field or wrap completely around a hill. On any map the "Contour Interval" is indicated somewhere as 25FT or 50ft. or 100ft. meaning that it will be this distance vertically between lines of the same altitude. In flat lands it may be a long distance between contour lines but on a steep slope they might be crowded close together.
The closer the lines are together, the steeper the slope, the further apart they are the more gradual the slope.
The closer the lines to each other the steeper the slope. Therefore by definition flat land has no contour lines.
The numbers on contour lines show the different elevations. Lets say one contour line says it has 1450 elevation. That means it is on the highest peak. When you see other numbers, that is just the elevation
The lines on a topographic map are called contour lines. These lines represent points of equal elevation above or below a reference point, such as sea level. Contour lines help us visualize the shape and features of the land surface on a two-dimensional map.
The direction of the lines tells us whether there is attraction or repulsion, and the spacing of the lines is a measure of the strength of the magnetic field. The more crowded the lines the stronger the field.
to identify elements
The rule of "V" on a topographic map refers to the shape created by contour lines when they converge or come together. When contour lines form a "V" shape, it indicates a valley or a depression in the terrain. The point of the "V" always points upstream or towards higher elevation.
The numbers on contour lines show the different elevations. Lets say one contour line says it has 1450 elevation. That means it is on the highest peak. When you see other numbers, that is just the elevation
it is a shape of land, represented on a map by contour lines, hypsometric tints, and relief shading.
Contour lines enable us to see changes in elevation using an overhead map
The lines on a topographic map are called contour lines. These lines represent points of equal elevation above or below a reference point, such as sea level. Contour lines help us visualize the shape and features of the land surface on a two-dimensional map.
EDITED 1/8/16: A contour interval is a the elevation difference between two adjacent contour lines. Previous person put some ridiculous answer. This one is the correct answer on APEX and does not need improvement.
The US Geological Survey's topographic maps have "contour lines" showing elevation. The farther apart the contour lines are, the more gentle the terrain is; the closer together they are, the steeper the terrain is. The darker contour lines typically denote 100-foot elevation changes and are marked as such, while the lighter lines typically indicate 10 or 20-foot changes in between. The interval can easily be determined by counting the number of lighter contour lines between the darker lines. The steepness of the slope can be determined by using the map's scale (which is indicated at the bottom of the map) to measure the distance between two points and using the contour lines to see the change in elevation.
The direction of the lines tells us whether there is attraction or repulsion, and the spacing of the lines is a measure of the strength of the magnetic field. The more crowded the lines the stronger the field.
Some are, others are not. The solid white and bone tile are generally self spacing. You can tell from the slight bump on the sides of the tile.
Grid lines
Lines of longitude tells us the degrees of the world. They are split up into the eastern and western hemispheres by the prime meridian.
The closer the lines the stronger the magnetic field.
to identify elements