Inner Planets Vocab Crossword

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Across
  1. 1. the outermost solid shell of rocks
  2. 4. Small Grains of dust and gas began colliding and sticking together
  3. 6. early stages of the planets made from accretion
  4. 7. the exact temp where matter melts, going from solid to a liquid
  5. 8. a ring of asteroids where most of the asteroids in the solar system are found
  6. 11. the curved path a planet takes around a star
  7. 12. is the temp where matter freezes, goes from a liquid to solid
  8. 15. What something is made of
Down
  1. 2. huge cliff like structures
  2. 3. the exact temp where matter condenses, goes from a gas to a liquid
  3. 5. where temp cools to the freezing point of most hydrogen-containing molecules
  4. 9. exact temp where matter boils, goes from a liquid to a gas
  5. 10. The gas layer that surrounds the planet
  6. 13. the spin of a planet axis
  7. 14. the movement of a planet around the sun
  8. 15. Solid or liquid heavy metals in the center