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Radioactive source — OCR GCSE Combined Science A Definition

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Combined Science
Key terms
Radioactive source

GCSE Combined Science · key term

Radioactive source

Definition

A material containing unstable atomic nuclei that emit radiation as they decay.

Used by OCR

How each exam board covers it

OCR GCSE Combined Science A · J250

Specification P4.3m · Physics Paper 2

A radioactive source contains unstable atomic nuclei that emit radiation as they decay. The radioactive material is the substance containing those atoms; radiation is what travels away from it.
Revise: Contamination vs Irradiation

OCR Combined Science A past papers

Related key terms

Irradiation
Radioactive contamination
Shielding

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