Physics P2 6.1 Observing nuclear radiation. 0.0 / 5 ? PhysicsRadioactivityGCSEAQA Created by: Atlanta and JacobCreated on: 14-10-16 21:42 What does a radioactive substance contain? An unstable nuclei that become stable by emitting radiation. 1 of 8 What are the three main types of radiation from radioactive substances? Alpha, beta and gamma radiation. 2 of 8 When does radioactive dec ay occur? Radioactive decay is a random event, we cannot predict or influence when it happens. 3 of 8 Where does background radiation come from? Background radiation is from radioactive substances in the environment, or from space, or from devices such as X-ray machines. 4 of 8 What is the basic structure of an atom? The basic structure of an atom is a small central nucleus, made up of protons and neutrons, surrounded by electrons. 5 of 8 How do the nuclei of radioactive substances become stable? By radioactive decay, in this process they emit radiation and turn into other elements. 6 of 8 Which part of an atom might emit alpha particles? The nucleus. 7 of 8 What happens to the rate of radioactive decay if the temperature is doubled? It stays the same. 8 of 8
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