Contour Lines

2. There are 3 ways of showing the height There are 3 ways of showing the height
of the land above sea level:of the land above sea level:
•Contour lines-Contour lines- these are lines which these are lines which
join up points of equal heights on landjoin up points of equal heights on land
Mapping HeightMapping Height
10
40
30
20

3. 2)2)Spot heights-Spot heights- these are points on a these are points on a
map where map makers have checked map where map makers have checked
the height of the land. You would not the height of the land. You would not
find anything on the groundfind anything on the ground
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Mapping HeightMapping Height

4. 3)3)Triangulation points-Triangulation points- these are these are
concrete pillars found at the top of concrete pillars found at the top of
the hill, and are used to measure the the hill, and are used to measure the
landland
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6. The Contour RulesThe Contour Rules
1.1.Contour lines never crossContour lines never cross
3.3.Contour lines are orange in colourContour lines are orange in colour
5.5.Contour lines are thin and faint lines on a mapContour lines are thin and faint lines on a map
7.7.Contour lines form a circuitContour lines form a circuit
9.9.Contour lines are curved linesContour lines are curved lines
11.11.If the land is steep Contour lines are close togetherIf the land is steep Contour lines are close together
13.13.If the land if flat they are far apartIf the land if flat they are far apart
8.8.On modern maps, Contours go up in 5 metre or 10 On modern maps, Contours go up in 5 metre or 10
metre intervalsmetre intervals