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The planet earth and its motion
- 1. The Planet Earth: Its Motions and Seasons Chapter 1
- 7. FACTS ABOUT THE EARTH Average Distance from the Sun 92,955,820 miles Equatorial Circumference 24,901 miles Sidereal Rotation Period (Length of Day) 23.934 hours Sidereal Orbit Period (Length of Year) 365.24 Earth days Mean Orbit Velocity 66,629 mph Equatorial Inclination to Orbit 23.45 degrees Volume 259,900,000 mi3 Mass 5.9737 x 1024 kg Density 5.515 g/cm3
- 12. Seasons of the Earth
- 13. Earth at Winter Solstice
- 14. Earth at Summer Solstice
- 15. Why do we have seasons?
- 16. The Winter & Summer Sun
- 18. Seasons in the Northern & Southern Hemisphere
- 21. Summary
- 22. End of Presentation Exam next meeting….