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Encyclopedia > Geographical zone
The torrid zone
The temperate zones
The frigid zones

Each of the five main latitude regions of the earth's surface is said to be a geographical zone, divided by the major circles of latitude. The differences between them relate to climate, and the behaviour of the sun. They are as follows: Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... The 4 main circles of latitude on Earth A circle of latitude is an imaginary east-west circle on the Earth, that connects all locations with a given latitude. ...

  • The North Frigid Zone, north of the Arctic Circle
  • The North Temperate Zone, between the Arctic Circle and the Tropic of Cancer
  • The Torrid Zone, between the Tropics of Cancer and Capricorn
  • The South Temperate Zone, between the Tropic of Capricorn and the Antarctic Circle
  • The South Frigid Zone, south of the Antarctic Circle

In the Torrid Zone, also known as the Tropics, the sun is directly overhead at least once during the year - at the edges of the tropics this occurs at the summer solstice, and over the equator, at the equinoxes. This is the hottest part of the earth, and there are two annual seasons: a dry and a wet. The Torrid Zone includes most of Africa, southern India, southern Asia, Indonesia, New Guinea, northern Australia, Central America and northern South America. For the fast food restaurant chain, see Arctic Circle Restaurants. ... For the novel by Henry Miller, see Tropic of Cancer (novel). ... World map showing the Tropic of Capricorn For the novel by Henry Miller, see Tropic of Capricorn (novel). ... Zoomable PDF of the map this is based on The Antarctic Circle is one of the five major circles of latitude that mark maps of the Earth. ... A noontime scene from the Philippines on a day when the Sun is almost directly overhead. ... “Summer solstice” redirects here. ... World map showing the equator in red In tourist areas, the equator is often marked on the sides of roads The equator marked as it crosses Ilhéu das Rolas, in São Tomé and Príncipe. ... In astronomy, an equinox is defined as the moment when the sun reaches one of two intersections between the ecliptic and the celestial equator. ... A world map showing the continent of Africa Africa is the worlds second-largest and second most-populous continent, after Asia. ... For other uses, see Asia (disambiguation). ... For other uses, see Central America (disambiguation). ... South America South America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. ...


In the two Temperate Zones, the sun is never directly overhead, and the climate is mild, generally ranging from warm to cool. The four annual seasons, Spring, Summer, Autumn and Winter occur in these areas. The North Temperate Zone includes Great Britain, Europe, northern Asia and North America. The South Temperate Zone includes southern Australia, New Zealand, southern South America and South Africa. For other uses, see Europe (disambiguation). ... North America North America is a continent[1] in the Earths northern hemisphere and (chiefly) western hemisphere. ... South America South America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. ...


The two Frigid Zones, or polar regions, experience the midnight sun and the polar night for part of the year - the edge of the zone experiences one day at the solstice when the sun doesn't rise or set for 24 hours, while in the centre of the zone (the pole), the day is literally one year long, with six months of daylight and six months of night. The Frigid Zones are the coldest parts of the earth, and are covered with ice and snow. The North Frigid Zone (the Arctic) includes northern Canada and Alaska, Greenland, northern Scandinavia, northern Russia, and the Arctic ice. The South Frigid Zone (The Antarctic) is filled by the continent of Antarctica; the next closest mainland is the southern tip of Chile and Argentina, followed by New Zealand. Location of the polar regions Northern Hemisphere permafrost (permanently frozen ground) in purple. ... The midnight sun at Nordkapp, Norway. ... The polar night is the night lasting more than 24 hours, usually inside the polar circles. ... “Summer solstice” redirects here. ... The red line indicates the 10°C isotherm in July, commonly used to define the Arctic region border Satellite image of the Arctic surface The Arctic is the region around the Earths North Pole, opposite the Antarctic region around the South Pole. ... For other uses, see Alaska (disambiguation). ... For other uses, see Scandinavia (disambiguation). ... Greek ἀνταρκτικός, opposite the arctic) is a continent surrounding the Earths South Pole. ...


The edges of the Temperate Zones are also sometimes referred to as the Subtropics, Subarctic and Subantarctic. The subtropics are the zones of the Earth immediately north and south of the tropic zone, which is bounded by the Tropic of Cancer and the Tropic of Capricorn, at latitude 23. ... The subarctic is a region in the Northern Hemisphere immediately south of the true Arctic and covering much of Canada and Siberia, the north of Scandinavia, northern Mongolia and the Chinese province of Heilongjiang. ... The subantarctic is a region in the Southern Hemisphere immediately north of the true Antarctic. ...


History

The idea of a geographical zone was first hypothesized by the ancient Greek scholar Aristotle. He said that the earth was divided into three types of climatic zones, based on their distance from the equator. For other uses, see Aristotle (disambiguation). ...


Thinking that the area near the equator was too hot for habitation, Aristotle dubbed the region around the equator (from 23.5° N to 23.5° S) as the "Torrid Zone." He reasoned that from the Arctic Circle to the pole was permanently frozen. He called this uninhabitable zone the "Frigid Zone." The only area that Aristotle believed was livable was the "Temperate Zone", lying between the "Frigid Zone" and the "Torrid Zone". One of the reasons Aristotle believed that the Temperate Zone was the best for life could come from the fact that he lived in that zone.


As knowledge of the earth's geography improved a second "Temperate Zone" was discovered south of the equator, and a second "Frigid Zone" was discovered around the Antarctic. Greek ἀνταρκτικός, opposite the arctic) is a continent surrounding the Earths South Pole. ...


Aristotle's map was vastly oversimplified, although the general idea was correct. Today, the most commonly used climate map is the Köppen climate classification, developed by German climatologist and amateur botanist Wladimir Köppen (1846-1940), which divides the world into six major climate regions, based on average annual precipitation, average monthly precipitation, and average monthly temperature. The Köppen climate classification is one of the most widely used climate classification systems. ... Wladimir Peter Köppen (September 25, 1846 in Saint Petersburg, Russia — June 22, 1940 in Graz, Austria) was a German geographer, meteorologist, climatologist and botanist. ...

Köppen's map

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See also



 

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