Radiation 2.0 / 5 based on 3 ratings ? ScienceRadiationGCSEAQA Created by: BethHorton4Created on: 05-05-13 15:27 1063215749 Across 1. The average time it takes for the number of nuclei in a radioactive isotope sample to halve is this (4, 4) 3. The type of radiation that is most dangerous inside the body is... (5) 4. Radioactivity is predictable/ random/ Measurable (6) 5. Background radiation comes mainly from... (5, 3) 9. Radiographers wear ... aprons to protect themselves from radiation. (4) Down 2. Cosmic rays come from... (3, 3) 3. Carbon 14 is one of these (2, 7) 6. This unit is used to measure radioactivity. (9) 7. The type of radiation that is the least ionising is... (5) 10. The type of radiation that has virtually no mass and a charge of -1 is... (4)
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