Earth Moon and sun

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Across
  1. 5. the line on which an object rotates
  2. 7. occurs at a first quarter and at a third quarter
  3. 8. the bright streaks on the moon's surface
  4. 9. the portion of the moon or a planet reflecting light as seen from the earth
  5. 10. the spin of an object around its axis
  6. 12. when earth's rotation axis is tilted directly toward or away from the sun
  7. 13. all you see is the part that is not lit on the moon
  8. 16. large dark flat areas on the moon
  9. 18. phases of the moon during which less of the moon's near side is lit each night
  10. 19. the path an object follows as it moves around another object
  11. 20. the central, darker part of a shadow where the light is totally blocked
  12. 21. an occurrence during witch the moon moves into earth's shadow
  13. 22. all the left half is shown
  14. 23. occurs at a full moon and new moon
Down
  1. 1. when Earth's rotation axis neither toward nor away from the sun
  2. 2. holes in the moon where things have hit the moon
  3. 3. mountains on the moon that have been eroded and were created from thins hitting the moon
  4. 4. the periodic rise and fall of the ocean's surface caused by the gravitational force between earth and the moon and earth and the sun.
  5. 6. the lighter part of a shadow where light is partially blocked
  6. 8. the orbit of one object around another object
  7. 11. all you see is the completely lit part of the moon
  8. 14. the right half of the moon is shown
  9. 15. phases of the moon during which more of the moon's near side is lit each night
  10. 17. an occurrence during which the moon's shadow appears on the earth's surface