Upload
thomasine-griffin
View
218
Download
0
Embed Size (px)
Citation preview
Contour Lines and Topographic Maps
We use contour maps to help us show the 3 dimensional
shape of the land on a 2 dimensional map!
Contours are lines on a map that join places of the same elevation
A single dot is the easiest way to show elevation above sea level on a map
Contour lines show the form or shape of the land – ex. mountains, islands
Rules of Contour Lines1. Joins places of the same elevation above sea
level
2. They never cross or touch other contour lines
3. Contours never end except at the edge of the map or by joining up with themselves
4. A standard contour interval (difference in elevation) is always used. This means that there is an equal height interval between contour lines.
5. The closer the contour lines are to each other, the steeper the slope.
Showing different typesof terrain on
topographic maps…