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The Four Seasons

Answer Key

  1. The seasons are caused by a combination of Earth's tilt, Earth's orbit, and the effects of direct and indirect sunlight.
  2. Earth's orbit is the path Earth takes around the sun.
  3. Earth's tilt is the way Earth spins on its axis.
  4. Direct sunlight produces more heat than indirect sunlight.
  5. When Earth's Northern Hemisphere points toward the sun, summer occurs in the Northern Hemisphere and winter occurs in the Southern Hemisphere.
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