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The Sun - Earth - Moon System

The Sun - Earth - Moon System. Chapter 27.3. A. Daily Motions 1. Evidence of Earth’s Rotation - movement of Foucault pendulum - the Coriolis effect . 2. Day Length - our time keeping system is based on the solar day. B. Annual Motions

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The Sun - Earth - Moon System

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  1. The Sun-Earth-Moon System Chapter 27.3

  2. A. Daily Motions 1. Evidence of Earth’s Rotation - movement of Foucault pendulum - the Coriolis effect. 2. Day Length - our time keeping system is based on the solar day.

  3. B. Annual Motions - The seasons of the year are the result of the Earth’s tilt on its axis. 1. Solstices – points in the Earth’s orbit with the greatest amount of tilt toward the sun. Summer Solstice – June 20th or 21st Winter Solstice – December 21st or 22nd

  4. 2. Equinoxes – points in the Earth’s orbit with the least amount of tilt toward the sun. Vernal Equinox – March 20th or 21st Autumnal Equinox – September 22nd or 23rd Source - Wikipedia

  5. C. Phases of the Moon - result from the revolution of the Moon around the Earth. Source - Wikipedia

  6. Source - Wikipedia

  7. D. Lunar Motions - Tides Source - Wikipedia

  8. E. Solar & Lunar Eclipses Solar Eclipse - Earth passes into the Moon’s shadow. - Tilted lunar orbit makes this a relatively rare event. Lunar Eclipse - Moon passes into the Earth’s shadow. - Somewhat more common than solar eclipses. Video – Solar Eclipse (7:13 min) Source - Wikipedia Source - Wikipedia

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