======Exploring Reasons for the Seasons======


  * Review evidence for the earth orbiting the sun (we see different stars at different times of year)
  * Model the earth moving around the sun (counter-clockwise)
  * Demo with globe and axis always pointing in same direction

  * Identify position for winter, spring, summer, fall

  * Model tilted earth moving around the sun (23 degrees)

  * Lean backwards with same orientation to door while walking around lamp; when leaning toward the lamp: summer; when leaning away from the lamp: winter.  NOT summer when “closer to the sun” (Note Australia is having winter while we are having summer but earth is SAME distance from the sun; Australia is having summer while we have winter, but earth is SAME distance from the sun)
  * Effect of tilt toward sun during summer: sun rises earlier, sets later,  sun higher in sky, rays more direct;

  * During winter, sun rises later, sets earlier, sun lower in the sky, rays at more of an angle, go through more of the atmosphere.
  * Also review effect of full moon:  Sun                E  M  lineup causes high tides

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