Physics GCSE
sterilisation
What sterilisation means in Physics GCSE, as defined for AQA.
Definitions of sterilisation
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
Read the wording for your board, then hide it and explain sterilisation in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Gamma irradiation is used to sterilise surgical instruments and food because the radiation kills bacteria as it passes through the sealed packet.
Gamma sources sterilise surgical instruments and food by killing bacteria.
Topics that use sterilisation
- Radioactive contamination (AQA GCSE)
Related terms
- alpha inside the body
- contamination
- decay in contact with tissue
- duration of exposure
- internal versus external hazard
- ionising power
- irradiation
- irradiation leaves nuclei unchanged
Using sterilisation in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Physics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Physics GCSE termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge