The geographic coordinatesystem

The geographic coordinatesystem

1. Paralles

   • Are imaginary lines that run perpendicular to the Earth's axis. The equator is the parallel that dives the earth in two equal hemispheres

2. Meridians

   • Are imaginary semicircles that join the shout pole an the north pole . The Greenwich Meridian , or prime meridian.

3. Latitude

   • Is the distance between a point on the Earth's surface an the equator. North (N) and Shout (S) are used to indicate which side of the equator the parallel lies.

4. Longitude

   • Is a distance between a on the Earth's surface an the Greenwich Meridian . East (E) or West (W) are used to indicate which side of the prime meridian the meridians lies.

5. CARTOGRAPHY

   • Map projections : Use the maps to represent the surface of the earth .
     • Cylindrical
       • This type of projections is more accurate at the equator and tropics, but is distorted at the poles.
     • Flat
       • This type is frequently used in nautical maps and it is specially helpful in representing the poles.
     • Conical

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