Atomic StructureComparison

Irradiation vs Contamination

Part of Uses & Hazards of RadiationGCSE Physics

This comparison covers Irradiation vs Contamination 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 9 of 16 in this topic. Use this comparison to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 9 of 16

Practice

17 questions

Recall

5 flashcards

⚖️ Irradiation vs Contamination

FeatureIrradiationContamination
DefinitionExposed to external radiation sourceRadioactive material on/in the body
Danger levelDepends on type and timeGenerally more dangerous
Can you reduce exposure?Yes — move away, use shieldingMuch harder — material stays on/in you
ExampleX-ray, nuclear power workerSwallowing radioactive material
Worst radiation typeGamma (penetrates to internal organs)Alpha (concentrated local damage)

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Read this section alongside the surrounding pages in Uses & Hazards of Radiation. That gives you the full topic sequence instead of a single isolated revision point.

Practice Questions for Uses & Hazards of Radiation

Which type of radiation is used in smoke detectors?

  • A. Gamma
  • B. Beta
  • C. X-rays
  • D. Alpha
1 markfoundation

Explain how a smoke detector uses an alpha source to detect smoke.

2 marksstandard

Quick Recall Flashcards

Most ionising?
Alpha
Beta stopped by?
Few mm aluminium

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