Observing nuclear radiation 2.0 / 5 based on 2 ratings ? PhysicsRadioactivityGCSEAQA Created by: LeahCreated on: 25-02-13 19:25 What does a radioactive substance contain? unstable nuclei that become stable by emitting radiation 1 of 6 When does radioactive decay happen? Radioactive decay is a random event- we cannot predict or influence when it happens 2 of 6 Where does background radiation come from? - 3 details radioactive substances in the environment, or from space, or from devices such as X-ray machines 3 of 6 What is the basic structure of an atom? small central nucleus, made up of protons and neutrons, surrounded by electrons 4 of 6 which part of an atom might emit alpha particles? the nucleus 5 of 6 What happens to the rate of radioactive decay if the temperature is doubles? It stays the same 6 of 6
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