Season!

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Across
  1. 3. Earth aixs is at 23.5 degrees
  2. 4. hemisphere YOU experience seasons here
  3. 5. hemisphere opposite seasons from us
  4. 7. Force of attraction between objects
Down
  1. 1. Earth spins on it's axis and causes day and night
  2. 2. When the sun is farthest away north or south of the eqator
  3. 6. Causes seasons