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Map Projection Methods. Geography Grade 10. Projection Methods of Maps. A projection method is used to transfer images from the globe to a flat surface. It is used primarily for making small-scale maps, allowing a whole country or continent, or even the world to fit into one page.

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map projection methods

Map Projection Methods

Geography

Grade 10

projection methods of maps
Projection Methods of Maps
  • A projection method is used to transfer images from the globe to a flat surface.
  • It is used primarily for making small-scale maps, allowing a whole country or continent, or even the world to fit into one page.
  • The three most common types of projection are: plane, conical, and cylindrical.
plane projection
Plane Projection
  • Restricted to mapping small areas such as the North or South Pole
  • Accurate in the centre
  • Clearly shows the converging meridians
  • Inaccurate around the edges
conical projection
Conical Projection
  • Used for countries, continents or regions with an east-west alignment
  • Accurate along the “standard parallel” which occurs approximately half way up the map
  • Very distorted near the top and bottom
cylindrical projection
Cylindrical Projection
  • Useful for mapping equatorial regions and producing world maps
  • Only projection method that can gather most areas of the globe onto one map
  • Accurate along the equator
  • Almost useless beyond 60 degrees latitude
map projection methods1
Map Projection Methods
  • There is a wide variety of specific projection methods (eg. Mercator, Equal-Area, Peters, Winkle-Triple, etc.)
  • Each method has advantages and disadvantages
  • Generally speaking, there is no one overall best map projection method. Each method has value depending on your purpose.