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Chapter 2.2 Map Types

Chapter 2.2 Map Types. Maps are flat models of 3D objects, which distort all land masses are distorted. Projection Maps – maps made by transferring points from a globe onto a map. Mercator Projections 2 D maps with parallel lines longitude and latitude these distort the poles so that

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Chapter 2.2 Map Types

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  1. Chapter 2.2 Map Types • Maps are flat models of 3D objects, which distort all land masses are distorted.

  2. Projection Maps– maps made by transferring points from a globe onto a map Mercator Projections • 2 D maps with parallel lines longitude and latitude • these distort the poles so that Greenland looks larger than Australia (the opposite is true) • Used for airplane and ship navigation

  3. Conic Projections • Made by projection point and lines from a globe onto a cone • Used for road and weather maps but still distort larger areas

  4. A Conic Projection

  5. Another Conic Projections

  6. Still another conic projections

  7. Gnomic Projections • Made by projection lines and points from a globe onto a paper that touches the paper at one point • Distorts distances and direction • Useful from plotting circular courses

  8. A Gnomic projection

  9. More Gnomic Projections

  10. Topographic Maps • A mercator projection showing changes in elevation using contour lines which connect areas of equal elevation • Contour interval – the difference in elevation between two adjacent contour lines • Index Contours are contour lines marked with numbers • Depressed Contours are lines with haves on them showing the present of a crater or mine

  11. More on Topographical Maps

  12. HWK p 36 # 4, 5

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