Alpha - What type of radiation consists of 2 protons and 2 neutrons?, Beta - What type of radiation has a negative charge?, Gamma - Which type of radiation is fastest?, Electron - What leaves the nucleus during beta decay?, Paper - What material can stop alpha radiation?, Aluminium - What material can stop beta radiation?, Lead - What material can stop gamma radiation?, Halflife - The time taken for a radioactive substance to decay by half the original mass, Isotope - An atom of an element with the same number of protons, but different number of neutrons, Radioisotope - What is the name of an isotope capable of radioactive decay?, Carbon - _____-14 is an isotope that can be used to determine the age of an object, kill - Canned food is exposed to gamma radiation to ____ microbes, therapy - Radiation _______ involves using radiation to kill cancer cells.,

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