Sun-Earth-Moon System

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Across
  1. 1. Earth is farthest from the sun in...
  2. 2. German astronomer in 1543 that presented the heliocentric model
  3. 5. Ancient belief that the Earth was at the center and the sun revolved around the Earth
  4. 7. This is due to Earth's rotation around its axis
  5. 11. The moon's _______ takes about 27.3 days
  6. 14. Was convicted of heresy for defending the Heliocentric model
  7. 16. Earth's _______ is slightly elliptical or oval shaped
  8. 17. The moon is a natural what to Earth?
  9. 19. Model that placed the Sun at the center of the solar system
Down
  1. 1. Earth is closest to the sun in...
  2. 3. We have these today due to the relative motions of the Sun, Earth, and Moon
  3. 4. The moon's _______ takes about 27.3 days
  4. 6. Earth rotates and revolves in which direction?
  5. 8. The sun sets in...
  6. 9. This is due to Earth's full revolution around the sun
  7. 10. This is elliptical and it inclined about 5 degrees from the elliptical plane Earth is apart of
  8. 12. The sun rises in...
  9. 13. This is due to the Moon's revolution and rotation around Earth
  10. 15. Earth _______ around the sun
  11. 18. Earth rotates on this every 24 hours