Geographic Coordinate System

Today in class we discussed Geographic Coordinate System. This is a coordinate system used in geography that enable every location on Earth to be specified by a set of numbers, letters or symbols. Also known as latitude and longitude. The geographic grid is a system of imaginary arcs drawn in a grid pattern of earths surface. Meridians are arcs drawn between the North and South Poles. This is also known as Longitude. These Meridians intersect at the North and South poles, and are not equal distances from each other. These values range from 0 degrees (prime meridian) to 180 degrees east or west longitude. Parallels are arcs drawn parallel to the equator and at right angles to meridians. Each is numbered according to a system known as latitude. These values range from 0 degrees to 90 degrees North or South. These lines are the same distance from each other. A one degree difference is divided into 60 minutes, and then those 60 minutes are divided into 60 seconds. 23.5 degrees North (Tropic of Cancer) and 23.5 degrees South (Tropic of Capricorn) is known as the tropics. This region experiences very hot and humid weather, due to being so close to the equator. Lastly, the Prime Meridian, zero degrees longitude, goes through Greenwich UK.

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