Question

Describe the elements of map projection.

Answer 1

• Reduced Earth: A model of the earth is represented by the help of a reduced scale on a flat sheet of paper. This model is called the “reduced earth”.
• Parallels of Latitude: These are the circles running round the globe parallel to the equator and maintaining uniform distance from the poles.
• Meridians of Longitude: These are semi-circles drawn in north-south direction from one pole to the other, and the two opposite meridians make a complete circle, i.e. circumference of the globe.
• Global Property: In preparing a map projection the following basic properties of the global surface are to be preserved by using one or the other methods:
  1. Distance between any given points of a region;
  2. Shape of the region;
  3. Size or area of the region inaccuracy;
  4. The direction of any one point of the region bearing to another point.