Ch 25 The Solar System Vocabulary Crossword

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Across
  1. 4. The four large planets beyond the asteroid belt in our solar system
  2. 5. An interstellar cloud of gas and dust
  3. 6. Model proposed by Copernicus that put the Sun at the center of the universe
  4. 11. The Sun and all the objects that revolve around the Sun as a result of gravity
  5. 14. A small rock in interplanetary space that has not yet entered Earth's atmosphere
  6. 15. An enormous, oval-shaped, long-lived storm on Jupiter
  7. 17. Rocky objects larger than a few hundred meters that orbit the Sun
  8. 18. The time it takes for a planet to orbit the Sun
  9. 20. A planet-like object that has not cleared its orbit of other objects
  10. 22. The four largest moons of Jupiter discovered by Galileo
  11. 23. A celestial object that orbits a planet
Down
  1. 1. The four large outer planets composed of the gases hydrogen and helium
  2. 2. Model used by the ancient Greeks that puts the Earth at the center of the universe
  3. 3. An area of frequent meteors appearing to originate in a particular part of the sky
  4. 7. Material from outer space that burns up as it enters Earth's atmosphere
  5. 8. The time it takes for a planet to rotate once on its axis
  6. 9. A small, icy, dusty object with a bright tail in orbit around the Sun
  7. 10. Rings of dust and rock encircling a planet in a thin plane
  8. 12. Region between the orbits of Mars and Jupiter where many asteroids are found
  9. 13. The solid, dense, rocky planets that are the same as the inner planets
  10. 16. The hypothesis that our solar system formed from a spinning cloud of gas and dust, or a nebula
  11. 19. A region beyond the orbit of Neptune that contains millions of frozen objects
  12. 21. The four planets inside the asteroid belt: Mercury, Venus, Earth, and Mars