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Polar circle

 
Polar Circle

 
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Polar circle
 
 
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A polar circle is either the Arctic Circle
Arctic Circle

The Arctic Circle is one of the five major circle of latitude that mark maps of the Earth. It is the parallel of latitude that runs 66degree 33'39? north of the Equator....
 or the Antarctic Circle
Antarctic Circle

The Antarctic Circle is one of the five major circle of latitude that mark maps of the Earth. As of 2000, it lies at latitude 66degree 33' 39? south of the equator....
.






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Polarkreis Finnland 1975
Polarkreis Zwischen Narvik & Mo I Rana Norwegen
A polar circle is either the Arctic Circle
Arctic Circle

The Arctic Circle is one of the five major circle of latitude that mark maps of the Earth. It is the parallel of latitude that runs 66degree 33'39? north of the Equator....
 or the Antarctic Circle
Antarctic Circle

The Antarctic Circle is one of the five major circle of latitude that mark maps of the Earth. As of 2000, it lies at latitude 66degree 33' 39? south of the equator....
. On Earth
Earth

Earth is the third planet from the Sun. Earth is the largest of the terrestrial planets in the Solar System in diameter, mass and density. It is also referred to as the World and Wiktionary:Terra.Note that by International Astronomical Union convention, the term "Terra" is used for naming extensive land masses, rather...
, the Arctic Circle is located at a latitude
Latitude

Latitude, usually denoted symbolically by the Greek letter phi gives the location of a place on Earth north or south of the equator. Lines of Latitude are the horizontal lines shown running east-to-west on maps ....
 of 66° 33' 38" N, and the Antarctic Circle is located at a latitude of 66° 33' 38" S. Areas between each polar circle and its associated pole (north pole
North Pole

The North Pole, also known as the Geographic North Pole or Terrestrial North Pole is, subject to the caveats explained below, defined as the point in the northern hemisphere where the Earth's axis of rotation meets the Earth's surface....
, or south pole
South Pole

The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is one of the two points where the Earth's rotation intersects the surface....
), known geographically as the frigid zones, will annually experience at least one 24 hour period when the sun is continuously above the horizon
Horizon

The horizon is the apparent line that separates earth from sky.More precisely, it is the line that divides all of the directions one can possibly look into two categories: those which intersect the Earth's surface, and those which do not....
 and at least one 24 hour period when the sun is continuously below the horizon.

See also

  • Arctic Circle
    Arctic Circle

    The Arctic Circle is one of the five major circle of latitude that mark maps of the Earth. It is the parallel of latitude that runs 66degree 33'39? north of the Equator....
  • Antarctic Circle
    Antarctic Circle

    The Antarctic Circle is one of the five major circle of latitude that mark maps of the Earth. As of 2000, it lies at latitude 66degree 33' 39? south of the equator....
  • Polar region
    Polar region

    Earth polar regions are the areas of the globe surrounding the geographical pole also known as Geographical zone. The North Pole and South Pole being the centers, these regions are dominated by the polar ice caps, resting respectively on the Arctic Ocean and the continent of Antarctica....
  • Arctic
    Arctic

    The Arctic is the region around the Earth's North Pole, opposite the Antarctica region around the South Pole. The Arctic includes the Arctic Ocean and parts of Canada, Greenland , Russia, the United States , Iceland, Norway, Sweden and Finland....
  • Antarctica
    Antarctica

    Antarctica is Earth's southernmost continent, overlying the South Pole. It is situated in the Antarctica of the southern hemisphere, almost entirely south of the Antarctic Circle, and is surrounded by the Southern Ocean....
  • Frigid Zones
  • Polar climate
    Polar climate

    Regions with a polar climate are characterized by a lack of warm summers .The tundra covers over 20% of the earth. The sun shines 24 hours in the summer, and barely shines at all in the winter ....