1) What is meant by ionisation? a) Atoms gain an electron, turning into a charged particle (Ion) b) Atoms lose an electron, turning into a charged particle (Ion) c) Atoms gain or lose an electron, turning into a charged particle (Ion) 2) Alpha particles are the largest form of radiation, consisting of two neutrons and two protons a) True b) False 3) Americium-241 (alpha) is used in.. a) Ionise the air and to transfer the current in smoke detectors b) To set paper thickness in Paper mills c) Take X-rays of broken bones d) Estimate the extragalactic background light in the universe 4) Alpha Particles CANNOT travel through paper (1mm) Beta Particles CANNOTtravel through aluminium (2.55mm) Gamma Particles CAN travel through 20mm lead. If you ate a radio active source, which would be the most dangerous? a) Alpha b) Beta c) Gamma

Quiz for year 11 radiation

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