Nebular Theory Crossword

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Across
  1. 1. Step 4, The planets are formed through a process called _____
  2. 3. Step 2, the disk began to ____ creating a hot and dense center
  3. 4. How many Billions of Years ago the Solar System Formed
  4. 7. Step 3, The disk keeps spinning eventually creating things we call _____
  5. 8. ______ Theory, the theory that a piece of earth came off during the molten stage and cooled to make the moon
  6. 10. Step 1, a ____ collapsed in on itself to form a disk
Down
  1. 2. A theory stating the moon was _____ from outer space into earths orbit
  2. 5. Evidence 2, The terrestrial and Jovian planets are _____ from each other
  3. 6. Evidence 1, All the planets in the solar system are on the same ____
  4. 9. A theory that the moon was created by a giant _____ from a Mars sized object breaking off a piece of the earth