Key term for OCR GCSE Physics A, used in Uses and hazards.
The rate at which a source of unstable nuclei decays, measured in Becquerels (Bq).
Activity appears in OCR GCSE Physics A revision content for Radioactivity, especially Uses and hazards and Hazards and half-life.
Radioactivity
Uses and hazards • Hazards and half-life
Radioactivity
Uses and hazards • Contamination vs irradiation
Radioactivity
Radioactive emissions • Half-life calculations
Radioactivity
Radioactive emissions • Half-life concept
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