Physics path · GCSE Physics

Can you compare two half-lives without reversing the ratio?

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3 Fix

4 Apply

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Practice question

An industrial inspection facility stores two sealed radioactive sources. Isotope P has a half-life of 3.0 × 10^5 s. Isotope Q has a half-life of 6.0 × 10^4 s. Describe how to determine how many times as long isotope P's half-life is as isotope Q's, then identify which isotope could remain a hazard for longer.

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Official curriculum

4.4.3.2 Comparing isotope half-lives and the duration of radioactive hazards

This challenge practises knowledge and exam skills from the official GCSE science curriculum. Use these sources to see the exact subject content and its wider Key Stage 4 context.

AQA specification 4.4.3.2 Comparing isotope half-lives and the duration of radioactive hazards GOV.UK Key Stage 4 science programme

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