Atomic Energy

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Across
  1. 3. break down of radioactive material
  2. 5. atoms of the same element with varying neutrons
  3. 6. basic unit of matter
  4. 7. coal, oil, natural gas for example (2 words)
  5. 10. State where Three Mile Island is located
  6. 13. a very bad nuclear accident
  7. 16. county that experience atomic detonation
  8. 17. subatomic particle around nucleus
  9. 19. work's in Springfield nuclear plant
  10. 20. nuclear accident in Russia
Down
  1. 1. Stored energy
  2. 2. element used for dating fossils
  3. 4. types of energy that can replenish
  4. 8. Act of splitting an atom
  5. 9. decay half of radioactive material (2 words)
  6. 11. subatomic particle with no charge
  7. 12. positive subatomic particle
  8. 14. Energy in motion
  9. 15. radioactive elements (not Neptune)
  10. 18. Caused the accident in Fukushima