Nuclear Energy

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Across
  1. 3. The amount of time it takes for half of the atoms in a radioactive nucleus to decay
  2. 6. The number of protons and neutrons combined
  3. 7. Used to make the atom bomb
  4. 8. The center of an atom which can decompose
  5. 12. what is the process of an atom emitting mass and energy
  6. 14. Lives in the nucleus and determines the atomic number
Down
  1. 1. Reaction This is caused by fission but not fusion
  2. 2. This particle can be stopped by aluminum
  3. 4. Determined by the number of protons in a nucleus
  4. 5. Occurs on the sun and stars
  5. 9. an atom with a higher mass than what is recorded on the periodic table for that element
  6. 10. Lives in the nucleus with the protons
  7. 11. Most dangerous and is energy, not a particle. can only be stopped by lead
  8. 13. This type of particle can be stopped by skin and is the heaviest