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The Earth’s Tilt

The Earth’s Tilt. The Earth’s Tilt. The Earth is tilted on its axis at 23.5 degrees For 6 months the Northern Hemisphere is tilted towards the sun and for the next 6 months the Southern Hemisphere is tilted towards the sun This is the cause for the seasons. Solstices/Equinox.

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The Earth’s Tilt

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  1. The Earth’s Tilt

  2. The Earth’s Tilt • The Earth is tilted on its axis at 23.5 degrees • For 6 months the Northern Hemisphere is tilted towards the sun and for the next 6 months the Southern Hemisphere is tilted towards the sun • This is the cause for the seasons

  3. Solstices/Equinox • Summer Solstice-June 22nd, Maximum amount of daylight for the Northern Hemisphere • Autumnal Equinox-September 22st, Equal amount of sunlight for both Hemispheres • Winter Solstice-December 22st, Maximum amount of daylight for the Southern Hemisphere • Vernal Equinox-March 22st, Equal amount of sunlight for both Hemispheres

  4. Precession • Precession is the change in the orientation of a rotating axis • The angle remains constant but the direction of the axis changes • Would not affect Earth’s Seasons but would affect what stars are seen at night

  5. Nutation • Nutation is the wobbling that occurs around Earth’s axis which changes the angle about ½ of a degree every 18 years • Happens due to the gravitational pull of the moon

  6. Barycenter • A barycenter is the center that 2 objects orbit around. • When the moon orbits a planet both bodies orbit around a point in the middle • This point is closer to the larger body

  7. Barycenter • The sun does not remain motionless in the solar system. • Due to the pull of the planet’s gravity the sun orbits a barycenter in the solar system

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