Radioactivity GCSE Physics AQA (higher) Quiz on practically every sentence in the AQA revision guide. 4.5 / 5 based on 8 ratings ? PhysicsRadioactivityGCSEAQA Created by: Some like it hotCreated on: 18-06-12 18:26 What does a radioactive substance contain? unstable nuclei 1 of 16 How does an unstable nucleus become sable? by emitting nuclear radiation 2 of 16 What are the main types of radiation? alpha, beta & gamma 3 of 16 Can we influence radioactive decay? no 4 of 16 What is the most ionizing radiation? alpha 5 of 16 What is the least ionizing type of radiation? gamma 6 of 16 what is the most penetrating type of radiation? gamma 7 of 16 What is the least penetrating type of radiation? alpha 8 of 16 What type of radiation is made up of a high speed electron? beta 9 of 16 What type of radiation is made up of a very short wavelength? gamma 10 of 16 What is the half-life? the time taken for the number of parent atoms in a sample to half. 11 of 16 What else is the half-life? the time taken for the count rate to fall from half it's initial level. 12 of 16 What is a use for only Alpha radiation? smoke alarms 13 of 16 What is a use for only Beta radiation? to control the thickness of paper 14 of 16 What is a use for only Gamma radiation? sterilizing medical equipment 15 of 16 What is a use for both Beta and Gamma radiation? a tracer inside a patient's body 16 of 16
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