Atomic StructureTopic Summary
Topic Summary: Uses and Hazards of Radiation
Part of Uses & Hazards of Radiation — GCSE Physics
This topic summary covers Topic Summary: Uses and Hazards of Radiation within Uses & Hazards of Radiation for GCSE Physics. Revise Uses & Hazards of Radiation in Atomic Structure for GCSE Physics with 17 exam-style questions and 5 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 16 of 16 in this topic. Use this topic summary to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 16 of 16
Practice
17 questions
Recall
5 flashcards
Topic Summary: Uses and Hazards of Radiation
Key Terms
- Irradiation: External exposure to radiation
- Contamination: Radioactive material on/in body
- Tracer: Gamma source used to image organs
- Radiotherapy: Gamma rays to kill cancer
Radiation and Uses
- Alpha → smoke detectors
- Beta → paper thickness control
- Gamma → checking welds, medical tracers, radiotherapy, sterilisation
Safety: 3Ds
- Distance — stay further away
- Duration — reduce exposure time
- Dense shielding — use lead/concrete
- Tongs, not hands; badges to monitor
Exam Tips
- Justify radiation choice with properties
- Medical tracers: short half-life + gamma
- Contamination is more dangerous than irradiation
- Sterilised food is NOT radioactive