P2, Atoms and radiation 0.0 / 5 ? PhysicsRadioactivityGCSEAQA Created by: emmajane_Created on: 15-05-14 15:43 What is half life? The time it takes for a number of nuclei of the isotope sample to half 1 of 12 What are the 3 types of natural sources- radiation Cosmetic rays, rocks and soil and living things 2 of 12 What are 3 types of artificial sorces? medical x-rays, radioactive fallout and radioactive waste 3 of 12 Why do people who work in the radioactive industry have to wear a film badge? So they can check regularly the levels of radiation they have absorbed 4 of 12 Name 3 types of radiation Alpha, beta and gamma rays 5 of 12 What type of penetration does alpha radiation have? the weakest penetration. Particles can be stopped by a piece of paper 6 of 12 What type of penetration does beta radiation have and what can it be stopped by? It can penetrate air and paper. Can be stopped by aluminium 7 of 12 What type of penetration does gamma radiation have? What can it be stopped by? It has the most penetration. Can be stopped by lead 8 of 12 What is the magnetic field made of and what can it deflect? Name of positively charged particles. Can deflect alpha and beta radiation. 9 of 12 Why is alpha radiation the most harmful inside body? Because they are absorbed by cells 10 of 12 Why is gamma radiation not very harmful inside body? Becausre it passes straight through the cells 11 of 12 Why is gamma and beta radiation the most harmful outside the body? Because they can penetrate the skin and harm the cells inside 12 of 12
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