IMAGINARY LINES

There are five main parallels that are useful to explain the correlation between the Earth, the Sun, and climate. As such, these five main parallels also mark the five geographical zones. These are:

•   Arctic Circle: Is the boundary of the North Frigid Zone to the north.

•   Tropic of Cancer: Encloses the North Temperate Zone with the Arctic Circle.

•   The Equator: Divides the earth in North and Southern Hemispheres . The are around the Equator is referred to as the Tropics and is limited northward by the Tropic of Cancer and southward by the Tropic of Capricorn.

•   Tropic of Capricorn: Encloses the South Temperate Zone with the Antarctic Circle.

•   Antarctic Circle: Is the boundary of the South Frigid Zone to the south.