Sun-Earth Relationship

Tilt of the Earth Axis- an imaginary line running from the North Pole, through the center of the Earth, to the South Pole. Located at 23 ½ degrees upon the axis Effects temperature depending upon tilt of the Earth towards or away from the sun. https://www.youtube.com/watch?v=3e FqZWX8nTo

Rotation The spinning of the Earth on its axis. 1 rotation= 24 hours

Revolution Orbit of the Earth around the sun. 365 ¼ days in one year

The Seasons Equinoxes- “Equal Night” 12 hrs. of day/night Neither Pole is pointed toward or away from sun Autumnal Equinox (September 21/22) Vernal Equinox (March 21/22) Nothing to do with the changing of the clocks!

Cancer and Capricorn 23 ½ degrees North- Tropic of Cancer Northernmost point on Earth to receive direct sunlight 23 ½ degrees South- Tropic of Capricorn Southernmost point on Earth to receive direct sunlight

The Seasons Summer Solstice- North pole is pointed toward the sun at 23 ½ degrees North Winter Solstice- South pole is pointed toward the sun at 23 ½ degrees South

The Poles Each pole receives continuous sunlight for 6 months of the year When one pole receives sunlight the other receives little to no sunlight

Earth-Sun Notes Axis- an imaginary line running from the North Pole, through the center of the Earth, to the South Pole. Located at 23 ½ degrees upon the axis Effects temperature depending upon tilt of the Earth towards or away from the sun. Rotation & Revolution 1 rotation = 24 hours 1 revolution around the sun = 365 ¼ days Tropic of Cancer & Capricorn Tropic of Cancer-23 ½ degrees North Northernmost point on Earth to receive direct sunlight Tropic of Capricorn – 23 ½ degrees South Southernmost point on Earth to receiver direct sunlight

Earth-Sun Notes Equinoxes “Equal Night” Seasons Poles 12 hours of Day/Night Autumn Equinox (September 21/22) Vernal Equinox ( March 21/22) Seasons Summer Solstice North pole is pointed towards the sun at 23 ½ degrees North Winter Solstice South pole is pointed towards the sun at 23 ½ degrees South Poles Each pole receives continuous sunlight for 6 months of the year.