Today's Rocket Words: Your 5 words and meanings to learn

radiation

energy emitted from a source, carried by a particle or wave

radioactive decay

when an unstable atomic nucleus emits radiation

alpha particle

a positively charged particle that consists of two protons and two neutrons emitted by the radioactive decay of some nuclei

beta particle

a high energy negatively charged electron emitted by the radioactive decay of some nuclei

gamma ray

a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei

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