Unit 2 7th period 7th grade crossword

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Across
  1. 4. The planet that is known to support life
  2. 6. a type of plate boundary where two boundaries move away from each other
  3. 7. at the edge of our solar system
  4. 9. a object that orbits earth but is too small to be considered a planet
  5. 10. the light source of a solar system
Down
  1. 1. When 2 plate boundaries collide and one plate goes underneath another
  2. 2. between Mars and Jupiter
  3. 3. a object made of ice and gas that orbits the sun in long elliptical orbits
  4. 5. The galaxy we live in
  5. 8. a type of plate boundary where they slide past each other