1. Sun-Earth Relationship

2. 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.
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3. Rotation
The spinning of the Earth on its axis.
1 rotation= 24 hours

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

5. 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!

7. 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

8. 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

12. 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

13. 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

14. 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.