Space Crossword Review

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Across
  1. 1. / the _____ is always tilted on it's axis at a 23'5 angle.
  2. 3. / the sun rises in the east and sets in the ____.
  3. 5. rise / tides are the ________ ____ and fall of the sea level.
  4. 6. / our days and nights are caused by the ________ of the Earth.
  5. 7. / The sun is made up of ________ and helium.
  6. 9. / the moon orbits the Earth ____ every 28 days.
Down
  1. 2. / The moon is 4.6 _______ years old.
  2. 4. / the moon is the only natural _________ of the Earth.
  3. 7. / the sun is at it's _______ point at noon (12:00).
  4. 8. / the ____ has no air, no water and has 1/6th the mass of the Earth