Earth's tilt on its axis

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Across
  1. 3. how hot or cold something is
  2. 5. Earth's only natural satellite
  3. 7. The only known livable planet
  4. 8. 24 hours
  5. 11. going around a central object, takes one year
Down
  1. 1. The top and bottom halves of the earth
  2. 2. Summer, winter, spring, fall
  3. 4. spinning in place, causes day and night cyle
  4. 6. 365 days
  5. 9. invisible line going through the center of the earth
  6. 10. The most major natural light source for us