Solar!

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Across
  1. 1. change of year based on the amount of sunlight
  2. 3. imaginary line in the middle of the plant
  3. 5. regular path
  4. 6. the sun reaches a maximum or minimum
  5. 8. bottom half of the earth
  6. 11. spinning on a axis
Down
  1. 2. top half of earth
  2. 4. imaginary line
  3. 7. moving around a center object
  4. 9. day and night are equal
  5. 10. a slant