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Unformatted text preview: 7,927 Equatorial diameter 7,900 Polar diameter The North Pole and the North Star Great Circle-A great circle is a section of a sphere that contains a diameter of the sphere. The Beginning and End of a Day on Earth Earth/Sun Relationships 1. Rotation- counter clockwise direction 24 hours 2. Revolution- about 365 days 3. Polarity- idea that earth as it goes around the sun at 23.5 degrees. The Seasons July 4 th- Aphelion about 94 million miles away January 3 rd-Perihelion about 91 million miles away Equinox- March 20 th and September 23 rd Earth no polarity Constant Temperatures and no seasons Insolation Incoming solar radiation...
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This note was uploaded on 10/02/2011 for the course GEOG 1114 taught by Professor ? during the Fall '08 term at Oklahoma State.
- Fall '08