Stars Review Crossword

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Across
  1. 2. a low mass star that is done with fusion and just shining leftover energy
  2. 4. a ring of gases that slowly float away after the giant stage
  3. 5. the theoretical end stage of a low mass star
  4. 10. the stage that produces elements carbon through iron through fusion
  5. 11. the stage where hydrogen fuses together
  6. 12. when two or more atoms of elements combine to form a heavier element
  7. 13. the first element that fuses in stars
  8. 15. the last element that is able to be fused in stars
Down
  1. 1. cloud of H gas and dust that comes together to form a star
  2. 3. the element that is produced when helium fuses
  3. 6. an end stage of a massive star that melts protons and electrons into neutrons
  4. 7. this is the "process" that forms the elements heavier than iron
  5. 8. the stage that produces all elements heavier than iron
  6. 9. an end stage of the most massive stars that has gravity so strong not even light can escape
  7. 13. the element that is created when hydrogen fuses
  8. 14. the stage where helium fuses together