Nuclear Radiation Key Words

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Across
  1. 7. Slows down neutrons
  2. 11. An atom losing or gaining electrons
  3. 15. When an object has radioactive particles on it or in it
  4. 16. Radiation made from electrons
  5. 17. Tube that detects radiation
  6. 18. Splitting a nucleus
Down
  1. 1. The unit of count rate
  2. 2. Joining nuclei
  3. 3. Radiation made of EM waves
  4. 4. A word for a particle in the nucleus
  5. 5. The time it takes for count rate to halve
  6. 6. When an object receives radiation
  7. 8. Radiation made from helium nuclei
  8. 9. Cancer treatment
  9. 10. Same number of protons, different number of neutrons
  10. 12. Absorbs neutrons
  11. 13. The amount of radiation received
  12. 14. Radiation all around us