world map projections
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TRANSCRIPT
World Map Projections
What is a map?
• “A map is a two-dimensional drawing of all or part of the Earth’s surface,” – Geography Skills Handbook (Pg. 22)
Perspective
• Definition: A viewpoint.
Activity
• We’re going to compare the sizes of Greenland and Africa on two projections, the Mercator and the Robinson.
• By using only these two maps we will try to see how close in size they are to each other.
Mercator Projection
Robinson Projection
Actual Sizes
• Greenland: .8 million sq. miles• Africa: 11.6 million sq. miles
• 11.6/.8=14.5
• That means Greenland should fit into Africa 14.5 times!!
Other Ways of Looking at the World
Goode’s Projection
SourcesImages:http://www.petersmap.com/page3.htmlwww3.slv.vic.gov.auwww.gpht.comwww.jpmaps.co.ukwww.watermanpolyhedron.comhttp://t0.gstatic.com/images?
q=tbn:ANd9GcQpeLgPFqMvaRNbAzJlLqEXD35MMCQ8ZYPge1ghlcev3D7Oopo&t=1&usg=__vpxWnrWhxfevghiRK_I1v47B0Ak=
http://t0.gstatic.com/images?q=tbn:FiaEqZ_TzrvC5M:http://t0.gstatic.com/images?q=tbn:Eu2kJGDJwTgWOM:www.helmink.comwww.garwood-voight.comwww.pollsb.comwww.mall-maps.com
http://www.merriam-webster.com/dictionary/perspective
Geography Skills Handbook Pages 22-23