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Globes and Maps SOL WG.1c

Globes and Maps SOL WG.1c

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Globes and Maps SOL WG.1c

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  1. Globes and MapsSOL WG.1c

  2. Globes • Globes are three dimensional representations of the earth

  3. Advantages of Globes • Globes are more accurate than maps • Globes are not distorted

  4. Disadvantages of Globes • Globes are not portable • Globes do not show detail • Globes are more expensive than maps • There are no thematic globes

  5. Maps • Maps are two dimensional representations of the earth

  6. Advantages of Maps • Maps are cheaper than globes • Maps show detail • Maps can show themes (thematic maps) and be used for comparing things • Maps can be put into a book called an atlas • Maps are portable

  7. Disadvantages of Maps • Maps are distorted because the earth is not flat • Maps can distort shape, area, direction, and distance • This problem is somewhat solved by different map projections

  8. Map Projections • Map projections are a way to draw maps in order to lessen distortion. There are different types of projections because people use maps for different reasons.

  9. Mercator

  10. Mercator • The Mercator is used by ship navigators How do you identify it? • It is square • The latitude and longitude lines are at right angles • The top and bottom of the map are heavily distorted (Greenland is ginormous!)

  11. Polar

  12. Polar • The Polar projection is used by airline pilots because it shows the shortest distance between two points How do you identify it? • It is a circle • It only shows one hemisphere • The latitude lines are circles • The longitude lines radiate from the center

  13. Robinson

  14. Robinson • The Robinson projection is used to compare data. How do you identify it? • It has curved sides • The longitude lines curve towards the north and south pole

  15. Different Types of Maps • Political Maps • Physical Maps • Topographic Maps • Thematic Maps • Cartograms

  16. Political Maps • Political maps show man-made features such as cities, states, provinces, territories, or countries (Page 21)

  17. Physical Maps • Physical maps help you see the type of landforms and bodies of water in a specific area (Page 20)

  18. Thematic Maps • Thematic maps show specific types of information. Here are some examples of thematic maps: • Qualitative maps • Cartograms • Flow line maps

  19. Thematic Maps • Other types of thematic maps: • Population distribution and density • Economic activity • Resource • Language • Ethnicity

  20. Thematic Maps • Other types of thematic maps: • Climate • Precipitation • Vegetation

  21. Small Scale Maps • Maps can be large or small scale • A small scale map shows a large area but without much detail. • A small scale is used to see relative location in a region or between regions

  22. Large Scale Maps • A large scale map shows a small area with much more detail • A large scale is used to see relative location within a region

  23. Goode’s Interrupted Projected

  24. Goode’s Interrupted Projection • Peeled orange • Shows continents close to their true shapes and sizes. • Distances are less accurate especially in the oceans

  25. WinkelTripel Projection

  26. WinkelTripel Projection • Good overall view of the Earth • Not as distorted as the Robinson Projection at the poles • National Geographic uses the Winkel Tripel Projection

  27. Sinusoidal Projection

  28. Lambert Conformal Conical Projection

  29. http://egsc.usgs.gov/isb/pubs/Map Projections/projections.html