Earth in Space

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Across
  1. 2. There are four in a year
  2. 6. Midline of the Earth
  3. 7. Mostly bright moon
  4. 9. The tide when it's high
  5. 11. The Earth does this once a day
  6. 12. Move or cause to move into a sloping position
  7. 14. Has 365 days and happens every four years
  8. 16. The Earth does this once a year
  9. 17. The tide just after a new moon
  10. 18. South of the equator
  11. 19. The tide when it's low
Down
  1. 1. Most of the moon is dark
  2. 3. The tide just after the first or third quarter of the moon
  3. 4. When a planet or moon spins around something
  4. 5. An imaginary line about which a body rotates
  5. 8. An eclipse in which the sun is obscured by the moon
  6. 10. When the Earth is in sunlight
  7. 13. An eclipse in which the moon is covered by the Earth
  8. 15. Lunar phases