Nuclear physics 0.0 / 5 ? PhysicsRadioactivityGCSEAQA Created by: MARLABICreated on: 28-03-18 10:34 what is the equation for the alpha decay of uranium? 238 -> 234+4 thorium 92->90+2 helium 1 of 7 what is the half life? The half life is the time taken for the number of radioactive nuceli in an isotope to halve? 2 of 7 what does a short half life mean? It means that that the activity falls quickly? 3 of 7 what does a long half life mean? it means the activity falls more slowly because most of the nuclei dont decay 4 of 7 what is nucelar fission? It is a type of nuclearreaction that is used to release energy from large unstable atoms 5 of 7 what are the few risks of using radiation? Tissue damage,cancer from lower doseses not killing the cells and they divide uncontrollably,higher doses causing radiation sickness 6 of 7 what are tracers used to find? life threatening conditions 7 of 7
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