Radiation 2.0 / 5 based on 3 ratings ? ScienceRadiationGCSEAQA Created by: BethHorton4Created on: 05-05-13 15:27 1032954716 Across 1. The type of radiation that is the least ionising is... (5) 4. The average time it takes for the number of nuclei in a radioactive isotope sample to halve is this (4, 4) 5. The type of radiation that has virtually no mass and a charge of -1 is... (4) 6. Carbon 14 is one of these (2, 7) Down 2. Radioactivity is predictable/ random/ Measurable (6) 3. Background radiation comes mainly from... (5, 3) 6. The type of radiation that is most dangerous inside the body is... (5) 7. Radiographers wear ... aprons to protect themselves from radiation. (4) 9. This unit is used to measure radioactivity. (9) 10. Cosmic rays come from... (3, 3)
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