Earth & Space PRD 11

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Across
  1. 3. Number 1 on the periodic table
  2. 5. The best teacher ever
  3. 7. Where the sun gets it's energy
  4. 9. The star collapse, dies and explodes at the moment you create ________ at the core
Down
  1. 1. What formed elements 1,2,3 (Hydrogen, helium and lithium)
  2. 2. The E in E=mc2
  3. 4. The M in E=mc2
  4. 6. Number 2 on periodic table
  5. 8. Number 5 on periodic table