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Unit 3:
How to read a topographical map
What is a topographic map?
• Shows the shape of the Earth’s surface
• Contour lines … imaginary lines that show heights, depths, and steepness
Features on a topographic map
What features do you notice on this map?
Examples
(Beaufort, NC) (Yosemite National Park, California)
(Salt Lake City, Utah) (Mount Rainier, Washington)
Summary!• Thin brown lines represent contours or points of similar
elevation. The closer together they are, the steeper the terrain. • Contour lines form "v" shapes in valleys or along stream beds.
The point of the "v" points uphill. • Blue represents water. • Green represents orchards and forested areas. • Purple markings are those that have been "photorevised," or
added to the map since the original map was published.• Red areas represent urban areas, although the maps will often
indicate special buildings of significance within the urbanized area.
• Roads and highways are represented in black and red.
Practice!
Can you locate:• A river?• A reservoir?• A valley?• A mountain
peak?
Topographical Map of U.S.