7. Radioactivity and Particles - Physics
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5 Terms
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What are the units for activity, length, and time?
Bq, cm, h, min, s
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What are alpha, beta, and gamma radiations?
Ionising radiations from unstable nuclei
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What is the definition of half-life?
Time for half the nuclei in a sample to decay
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What is the difference between fission and fusion?
Fission splits nuclei; fusion combines nuclei
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What is the energy source of stars?
Nuclear fusion
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Flashcards (22)