David 8th

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Across
  1. 3. moon blocked
  2. 9. small planet collided with earth
  3. 12. imaginary line through poles
  4. 14. causes night and day
  5. 16. barely noticeable
  6. 17. extra high high tide
  7. 19. going in shadow
Down
  1. 1. darkest shadow
  2. 2. light colored old cratered areas
  3. 4. lightest shadow
  4. 5. pattern of weather
  5. 6. growing
  6. 7. orbit
  7. 8. sun blocked
  8. 10. dark colored lava filled craters
  9. 11. maximum and minimum sunlight
  10. 13. shrinking
  11. 15. axis causes seasons
  12. 18. Crater hole from collision with a space body