Earth, Moon and Sun

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Across
  1. 2. season when the Earth is in direct sunlight
  2. 5. phase of moon where you see no light
  3. 7. amount of high and low tides a day
  4. 11. the planet where we live
  5. 12. when an object circle another object
  6. 15. the tilt of Earth causes these
  7. 16. 29.5 days
  8. 18. when an object circles on its axis
  9. 19. phase of moon where it is shrinking
  10. 20. phase of moon where most of the left side is lit
Down
  1. 1. if the southern hemisphere is summer what is the northern hemisphere
  2. 3. responsible for high and low tides
  3. 4. these planets have shorter orbit and considered terrestial
  4. 6. these planets have longer orbits and considered gas planets
  5. 8. the phase of moon where only a small portion of the right side is lit
  6. 9. the force that attracts bodies to the center of Earth
  7. 10. if the northern hemisphere is fall then what is the southern
  8. 13. phase of moon where it is fully lit
  9. 14. 23.5 degrees
  10. 17. Mars atmosphere is made up of mostly
  11. 19. phase of moon where it is growing