Your SlideShare is downloading. ×
Map Projections
Map Projections
Map Projections
Map Projections
Map Projections
Map Projections
Map Projections
Map Projections
Map Projections
Map Projections
Map Projections
Map Projections
Map Projections
Map Projections
Upcoming SlideShare
Loading in...5

Thanks for flagging this SlideShare!

Oops! An error has occurred.

Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply
  • Be the first to comment

No Downloads
Total Views
On Slideshare
From Embeds
Number of Embeds
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

No notes for slide


  • 1. Key A C D E F G
    • Which Town do you think has fishing as the basis for their economy?
    • What is the most Southerly Physical Feature?
    • What is a main reason that the Wheat Field is located where it is?
    • What is the Human Characteristic located furthest North?
    • What town do you think provides a lot of material to the government to make pennies?
    • What town is the furthest to the south, but still connected to the railroad network?
    H = Copper = Wheat Field = Railroad = Lake = River = Forest = Statue of Mr. Raponi = Golden Gate Bridge B N S E W
  • 2. Map Projections Created by Mr. Raponi
  • 3. Map Projection
    • A map projection is any method used in
    • ___________________ (mapmaking) to represent the curved surface of the earth on a flat surface.
    • This cannot be done without some
    • ____________________.
    • The mapmaker must select the one best suited to the needs, reducing distortion of the most important features.
    Cartography Distortion
  • 4. Distortions
  • 5. Mapmakers
    • Mapmakers and mathematicians have devised almost
    • ________________ ways to project the image of the globe onto paper.
    • Every projection has its own set of advantages and disadvantages. There
    • is no “______________" map projection .
    Limitless Perfect
  • 6. Good Uses of Flat Maps
    • Flat maps can be more useful than globes in many situations:
    • Maps are more compact and easier to store.
    • They are viewed easily on computer displays.
    • Maps can show larger portions of the earth's surface at once.
    • These useful traits of flat maps motivate the development of map projections.
  • 7. The Problem with Flat Maps
    • Every flat map misrepresents the surface of the Earth in some way.
    • No map can rival a
    • _______________in truly representing the surface of the entire Earth
    • Since the world is a sphere, and a globe is a sphere, a perfect representation can be made.
  • 8. Mercator Projection
    • This map makes areas
    • near the ____________ look bigger than they really are.
      • Example, Greenland looks bigger than it really is. Here, it is larger than S. America, but in real life, it is less than half the size.
    • This is because, on a globe, the lines of longitude meet at the poles, but on this type,
    • they are _____________.
    Poles Parallels
  • 9. Compare the Two
  • 10. Interrupted Projection
    • By creating
    • _____________ in the picture of the world, mapmakers showed the size and shape of most of the land quite accurately.
    • Problems:
      • The gaps make it impossible to figure distances correctly
      • You could not use this kind of map to chart a journey across the ocean.
  • 11. Peter’s Projection
    • The Peters Projection was created in
    • ______________ by Dr. Arno Peters to address some of the distortions of existing maps
    • Problem: One square inch anywhere on this map represents an equal number of square miles. Distorts the shape in some cases.
      • Example: Africa
  • 12. Robinson Projection
    • Presented by Dr. Arthur H. Robinson in
    • ___________________.
    • Today, many geographers believe this to be the best world map available. It has been called so by National Geographic
    • While the Robinson projection does distort the globe a little, (Check out Antarctica), it shows the sizes and shapes of most countries accurately.
  • 13. Conclusion
    • There are many other types of projections, each with positives and negatives about them.
    • The key is knowing for what purpose you wish to use the map.
    • You will then be able to pick the map that best suits your needs.
  • 14. Map Projections