Edexcel International GCSE Physics
Edexcel International GCSE Physics Radiation and Half-life Exam Questions
Free Edexcel International GCSE Physics exam questions on Radiation and Half-life, with mark schemes. Covers half-life, uses and dangers of radiation and contamination.
Radiation and Half-life exam questions
These packs of real past exam questions cover the whole of Section 7: Radioactivity and Particles, including Radiation and Half-life. Work through every question on this sub-topic, then mark your answers against the mark scheme.
StemUp mark scheme flashcards
Edexcel IGCSE Physics 4PH1 Flashcards (Anki & Quizlet)
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Use them on Anki or Quizlet, then test yourself with the questions on this page.
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About Edexcel International GCSE Physics Radiation and Half-life
This sub-topic covers half-life and applications.
What you need to know
- Half-life Time for activity to halve.
- Uses Tracers, sterilising and smoke detectors.
- Safety Irradiation versus contamination.
Common mistakes in Radiation and Half-life
- Mixing contamination and irradiation.
- Forgetting to subtract background.
Try two Radiation and Half-life exam-style questions
1. A source falls from 800 to 100 Bq in 6 h. Find half-life. (1 mark)
Show the mark scheme answer
2 h.
2. Explain why gamma is used as a medical tracer. (1 mark)
Show the mark scheme answer
It passes out of the body and is weakly ionising.
Radiation and Half-life FAQs
What does this cover?
Half-life and radiation uses.
What is the unit of activity?
Becquerel.
Revise this topic with flashcards: Edexcel IGCSE Physics 4PH1 Flashcards, with mark scheme answers for Anki and Quizlet.
