Grid Lines And Time Zones

In class today, we talked about grids and the lines of latitude. Geography is the study of where things are found on Earth's surface and the reasons for the locations. Human geographers ask two simple questions:
1. Where are people and activities found on Earth?
2. Why are they found there?
Map- two dimensional or flat scale model of the Earth's surface.
Cartography- the art and science of mapmaking.

Here is a world map by Eratosthenes (195 BC).

Map serve two purposes:
1. absolute location
2. relative location
Absolute Location- your position on Earth; expressed in degrees, minutes, and seconds on latitude and longitude.
Relative Location- the regional position or situation of a relative to the position of other places.
Latitude- geographic coordinate that specifies the north-south position of a point on the Earth's surface; measured by imaginary lines running parallel to the equator and used to measure distance in degrees north or south of the equator.
The most significant parallel lines:
Arctic Circle- 66 degrees, 34' (66.57 degrees) N
Tropic of cancer- 23 degrees, 26' (23.43 degrees) N
Equator- (0 degrees N/S)
Tropic of Capricorn- 23 degrees, 26' (23.43 degrees) S
Antarctic Circle- 66 degrees, 34' (66.57 degrees) S