Geographical grid
Also called: Graticule · Topic: Latitude, Longitude and Time · NCERT: Class 11, Ch 3 "Latitude, Longitude and Time"; Class 11, Ch 4 "Map Projections"
Meaning
The geographical grid is a network of crossing lines drawn on a globe or a map. It is also called a graticule. Parallels of latitude run east–west, and meridians of longitude run north–south. A sphere has no natural starting point. The earth's rotation gives it two fixed points, the North and South Poles, and the grid is built on them. Any place can be located where its parallel and its meridian cross.
Example
India lies on this grid between about 8°N and 37°N, and between 68°E and 97°E.
Don't confuse with
- Geographical coordinates: these are the latitude and longitude values of one place. The grid is the full set of lines used to read them.