1. Ways to Show the Earth – Part 3

2. A. Explore Your World Cartographer – Mapmaker
Able to make very accurate maps of the earth’s surface
Geographic Information System – Use satellites to pinpoint one’s exact location
Also called GPS

6. B. Differences of Maps and Globes
Globe – Most accurate model of the earth shown in three dimensions
Globe’s roundness makes it more accurate than a map
Maps – Show the world in two dimensions and are less accurate than globes

7. Question Time Why would somebody use a globe?
Why would somebody use a map?
What is a better source of information, a globe or a map?

9. C. Photographs
Aerial Photographs – Photos of the Earth taken from the air
Satellite Images – Photos of the earth taken from space

13. D. Map Projections
Map Projections – Earth’s curved surface shown on a flat surface
Dozens of projections
All projections distort the earth in some ways
Make some places look bigger or smaller than they really are

15. E. Types of Projections
1) Mercator Projection – Type of projection used on maps for over 400 years
Makes the land at the top and bottom of the maps appear larger than they really are
2) Robinson Projection – Projection used today that gives a more accurate picture of the world

16. Mercator Projection

17. Robinson Projection