Astronomy Review

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Across
  1. 3. Oblong dwarf planet, rotates in only 4hrs
  2. 7. Only dwarf planet in the inner solar system, was once thought an asteroid
  3. 10. Summer and Winter have this season
  4. 12. When the moon appears completely dark
  5. 14. Bright streaks starting from a crater and extending away for long distances.
  6. 17. Mercury, Venus, Earth, Mars - These are _______ planets
  7. 18. Smaller, heavier, and further out than Pluto
  8. 20. The moon shows on just the right or left side
  9. 23. ~75% of the moon is showing on the right or left side
  10. 24. When space debris lands on Earth
  11. 25. When the moon is about halfway visible from the left or right side
  12. 26. rim Mountains that form during impact due to pressure
  13. 28. Bowl shaped or flat, below surrounding ground level
  14. 29. When this object hits the Earth's atmosphere and they start to burn up
  15. 30. A model of the solar system with the Earth at the center
Down
  1. 1. Jupiter, Saturn, Uranus, Neptune - These are _______ planets
  2. 2. Characteristically steep and may have giant "stairs" called terraces.
  3. 4. The moon appears completely bright
  4. 5. Fall and Spring have this season
  5. 6. Space debris made of mainly rock with some iron or icy parts
  6. 8. Blanket of material surrounding the crater that was excavated during the impact
  7. 9. The science that deals with the material universe beyond the Earth's atmosphere
  8. 11. Objects in space that range in size from dust to small asteroids
  9. 13. The curvature of an orbit
  10. 15. A model of the solar system with the sun in the center
  11. 16. This dwarf planet's existence proved another planet isn't actually a plane
  12. 19. planets get further from the sun, their period of revolution increases, This is Kepler's ____ Law
  13. 21. A solid body of ice, rock, dust, and/or frozen gasses
  14. 22. Planets move in elliptical orbits with the sun at one of the foci, This is Kepler's ____ Law
  15. 27. Was once classified as the 9th planet