Leila Travis - Solar System Crossword

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Across
  1. 2. a cloud of gas
  2. 10. the seemingly empty regions in the asteroid belt
  3. 12. can also produce twists and knots as they interact gravitationally with ring particles
  4. 14. Jupiter, Saturn, Uranus, and Neptune
  5. 15. a block of ice and gases that have frozen in the extreme cold of the outer solar system
  6. 16. the largest part of a comet
  7. 17. where meteoroids seem to diverge from a common point
  8. 19. consists of a tail, coma, and nucleus
  9. 20. meteorites that have a lumpy structure
  10. 21. an object that orbits the sun and massive enough for gravity to compress into sphere (ex. Pluto)
  11. 22. beyond Neptune, extending to perhaps 50 AU from the sun
  12. 23. small, planet-like bodies
Down
  1. 1. smaller objects, beyond Neptune
  2. 3. rocky or metallic bodies
  3. 4. made of the debris from a comet
  4. 5. escaped gases in a comet emitting light of their own
  5. 6. sunlight striking dust grains imparts a tiny force to them
  6. 7. located on Jupiter, can be seen in many photos
  7. 8. to pass in front of
  8. 9. a swarm of trillions of icy bodies that lie far beyond the orbit of Neptune
  9. 11. solar system originated from a rotating cloud
  10. 12. reappear at time intervals less than 200 years
  11. 13. solid body, while in space and before it reaches the atmosphere
  12. 18. stony meteorites that have no chondrules
  13. 24. glowing trail of hot gas and vaporized debris left by a solid object heated by friction as it moves through Earth's atmosphere at extremely high speed