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Understanding Topographical Maps: Features and Reading Techniques

This guide explains how to read a topographical map, which showcases the Earth's surface features through contour lines. Contours indicate elevation and steepness, with closer lines symbolizing steeper terrain. Colors such as blue for water, green for forests, and purple for updated features guide interpretation. Key landmarks in places like Yosemite National Park and Mount Rainier are highlighted. Learn to identify rivers, valleys, and mountain peaks while gaining insight into urban and rural area representations on maps.

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Understanding Topographical Maps: Features and Reading Techniques

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Presentation Transcript

  1. Unit 3: How to read a topographical map

  2. What is a topographic map? • Shows the shape of the Earth’s surface • Contour lines … imaginary lines that show heights, depths, and steepness

  3. Features on a topographic map What features do you notice on this map?

  4. Examples (Beaufort, NC) (Yosemite National Park, California) (Salt Lake City, Utah) (Mount Rainier, Washington)

  5. 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.

  6. Practice! Can you locate: • A river? • A reservoir? • A valley? • A mountain peak?

  7. Topographical Map of U.S.

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