Topographic Maps

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Topography & Geography

Topographic Maps

created by TeachPower.net

Topography

•Topography – variations in elevation over a landscape.

Contour Lines•How can a flat map show steep

or shallow an uneven surface on earth?

•Contour lines: line that connects points of equal elevation.–Drawn at a set elevation (every 10m, 50m, 100m , etc.)

–Closer the lines the steeper the elevation and vice versa.

Contour Lines• Index Contour:

darkest, labeled contour line.

• Contour interval: contour lines that are not labeled.

• Closed Contour: indicates a top of a hill or mountain.

• Hachure: contour line with dashes.

600m

600m

Slope• Steepness of the land is called slope• Contour lines that are spread apart

indicate a gentle slope.• While contour lines that are very close

depict a steep slope.

Using Topographic Maps

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