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Radioactive Decay Terms

Radioactive Decay Terms

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Tags: science   ela   chemistry   rst.9-10.4   rst.11-12.4   high school   ngss   radioactivity   radioactive   decay   hs-ps1-8   ps1-8   alpha   beta   gamma  

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Radioactive Decay
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The process by which a nucleus undergoes a decomposition into a different nucleus. Also known as nuclear decay or radioactivity.
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Beta Decay
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A type of radioactive decay in which a beta particle is emitted from an atomic nucleus.
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Alpha Decay
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A type of radioactive decay in which an atomic nucleus emits an alpha particle.
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(alpha particle)
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A helium nucleus that is emitted in alpha decay.
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Fission
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The splitting of a heavy nucleus into smaller nuclei.
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Fusion
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The combining of smaller nuclei to form a larger, heavier nucleus.
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(beta particle)
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An electron that is emitted in beta decay.
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(gamma ray)
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A high-energy photon released in gamma radiation.
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Gamma Radiation
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A type of radioactive decay in which an atomic nucleus emits a gamma ray.
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Electron Capture
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The process by which an inner-orbital electron is captured by the nucleus, converting a proton into a neutron in the process.
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Decay Series
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An isotope-specific set of radioactive decays that occur until a stable nucleus is formed.
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Rate of Decay
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The rate at which a sample of an isotope radioactively decays.
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Half-Life
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The amount of time required for half of the nuclei in a sample of an isotope to radioactively decay.
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Geiger Counter
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A device used to measure radioactivity by counting ionizing particles.
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Radiocarbon Dating (Carbon-14 Dating)
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A technique used to estimate the age of objects based on our knowledge of radioactive decay.
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