CrossWord

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Across
  1. 2. chemical symbol of a very 'radiant' radioactive element discovered by Marie Curie
  2. 4. name of a radioactivity counter designer
  3. 6. what atomic radiation can do to particles
  4. 7. positive charge of an alpha particle
  5. 9. a possible effect of too high a radiation dose
  6. 11. this process splits atoms in a nuclear reactor releasing lots of energy
  7. 13. only stops alpha radiation
  8. 14. radioactive gas from minerals underground
Down
  1. 1. 1cm of it stops most beta radiation
  2. 3. particle with mass 1, an electric field has no effect on it
  3. 5. the first city in the world to be devastated by an atomic bomb
  4. 8. a chemical compound, used in medicine, in which one or more atoms have been replaced by a radioisotope
  5. 10. a good gamma emitter with a mass of 60 used in cancer treatment
  6. 12. any charged particle