Science Behind the Atomic Bomb

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Across
  1. 4. form of radiation in which an electron is released
  2. 7. the city where Little Boy was dropped
  3. 9. possess the same number of protons in their nuclei but have different numbers of neutrons
  4. 10. uses a spectograph to send a stream of charged particles through a strong magnetic field
  5. 12. the city where Fat Man was dropped
  6. 14. the first atomic bomb
  7. 16. has a half-life of 5730
  8. 17. subatomic particle with no charge
  9. 19. the element utilized in the atomic bomb named Little Boy
Down
  1. 1. the first device to separate chemical isotopes
  2. 2. emitting or relating to the emission of ionizing radiation or particles
  3. 3. the original radioactive isotope before decaying
  4. 5. the element utilized in the atomic bomb named Fat Man
  5. 6. the second atomic bomb
  6. 8. the most penetrating form of radiation
  7. 10. subatomic particle with a negative charge
  8. 11. building blocks of matter
  9. 13. the least penetrating form of radiation
  10. 15. the element produced after an isotope decays
  11. 18. subatomic particle with a positive charge