science words part 2

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Across
  1. 3. to keep revolving
  2. 5. the slow movement of the axis
  3. 10. wave length
  4. 12. earth's center
Down
  1. 1. this event is quite rare but when it does happen cover your eyes
  2. 2. magnetic fields
  3. 4. developed from a primeval nebula
  4. 6. following a wavy path
  5. 7. when the moon passes in front of earth
  6. 8. sun as the center
  7. 9. gas in outer space
  8. 11. day and night are equal length in time