Reasons for seasons
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Reasons for seasons

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Tilt and revolution

Tilt and revolution

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Reasons for seasons Presentation Transcript

  • 1. The Reasons for the Seasons
  • 2. January
  • 3. February
  • 4. March
  • 5. April
  • 6. May
  • 7. June
  • 8. July
  • 9. During Our Summer
    • The Northern Hemisphere leans toward the Sun in its revolution, there are more daylight hours, and the Sun’s angle is more perpendicular to us than at other times of year.
    • The longer days and more concentrated sunlight result in more heating.
  • 10. August
  • 11. September
  • 12. During Our Spring and Fall
    • The Earth leans neither toward nor away from the Sun; daylight and nighttime hours are more equal and temperatures are moderate.
  • 13. October
  • 14. November
  • 15. During Our Winter
    • The Northern Hemisphere leans away from the Sun, there are fewer daylight hours, and the Sun hits us at an angle; this makes it appear lower in the sky.
    • There is less heating because the angled Sun’s rays are “spread out” rather than direct.
  • 16. December
  • 17. Resources Used
    • http://astro.unl.edu/naap/motion1/animations/seasons_ecliptic.swf
    • www.learner.org