GCSE Radiation

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Across
  1. 2. Naturally ocurring radiation
  2. 3. Type of radiation that requires lead to block it
  3. 5. Time taken for half of radioactive particles to decay
  4. 6. Particle with same number of protons but different number of neutrons
  5. 7. When radioactive nuclei settle on a substance
  6. 10. When radioactive particles pass through a material
  7. 11. Centre of an atom
  8. 13. particle that orbits the nucleus in an atom
Down
  1. 1. Total number of protons in nucleus
  2. 3. Device used to detect radiation
  3. 4. Most ionising type of radiation
  4. 8. Number of radioactive counts per second
  5. 9. Total number of protons and neutrons in nucleus
  6. 12. Type of radiation made from electrons