Notes
Slide Show
Outline
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Day & Night
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The Earth spins on its axis
  • The spinning is called ROTATION
  • The direction of rotation is counterclockwise if you are looking at it as if you were floating over the North Pole
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As the Earth spins, part of the Earth is facing toward the Sun, and part is facing away from the Sun.
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The part of the Earth facing the Sun has daytime
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Because the Earth is tilted, different parts of the planet get different amounts of sunlight at different times of the year.
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In the Spring and Fall
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In the Summer and Winter
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In the Summer and Winter
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Let’s look at some more computer models:
  • http://ithacasciencezone.com/earthzone/lessons/07meteor/daynight.htm
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What about San Antonio?
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How does living so close to the Tropics affect out day length