Geodetic system

A geodetic system is like a big map that helps people find where they are and where they want to go. It helps pilots, sailors, and hikers find their way.

Imagine you are drawing a big, curved line around the whole world. This line is called the equator. Halfway between the top and the bottom of the earth, there is a line that goes around the earth. This line is called the Prime Meridian.

The geodetic system uses these two lines to measure where you are on the earth. Along the equator, there are imaginary lines that go up and down called longitude lines. Longitude lines are like ladders that go around the world from the north pole to the south pole. They help measure if you're on the left or right side of the world.

Along the Prime Meridian, there are imaginary lines that go from east to west called latitude lines. Latitude lines are like the rungs of a ladder, going around the world from the equator to the north pole and south pole. They help measure if you're close to the North or South Pole.

Using these imaginary lines, the geodetic system can create a grid on the Earth's surface, like a giant game of battleship. It helps people to locate places anywhere on the Earth's surface by giving them coordinates, which are like an address for a particular location on the grid.

So, if you want to find a place on Earth, you can say its coordinates or address using the geodetic system. Just like you tell someone your home address, the geodetic system tells us where places are in the world.