Physics-Radioactivity 0.0 / 5 ? PhysicsRadioactivityGCSEAQA Created by: Sarah_SASCreated on: 26-01-19 13:41 What's the atomic/proton number? The number of protons in the nucleus. It defines what element the atom is. 1 of 12 What's the mass number? The total number of nucleons in the nucleus. 2 of 12 What is the alpha decay equation? The mass number decreases by 4, and the proton number decreases by 2. 3 of 12 What is the beta decay equation? The mass number doesn't change, and the proton number increases by 2. 4 of 12 What is the range in air of each type of radiation? Alpha radiation is a few cm, beta is around 1m and gamma radiation can go up to >1km. 5 of 12 What type of radiation is absorbed by paper? Alpha radiation. 6 of 12 What type of radiation is absorbed by thick lead/concrete? Gamma radiation. 7 of 12 What type of radiation is absorbed by plexi-glass or thin metal? Beta radiation. 8 of 12 What are the ionising powers of the types of radiation? Alpha has the highest, beta has a mid-range and gamma has the lowest. 9 of 12 What do you do to protect yourself from radiation? Limit your exposure, keep your distance and shield yourself. 10 of 12 What is the splitting of a parent nuclei into a daughtrt nuclei called? Nuclear fisson. 11 of 12 What is the joining of 2 small nuclei to form a larger one called? Nuclear fusion. 12 of 12
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