Physics GCSE
self-sustaining
What self-sustaining means in Physics GCSE, as defined for AQA.
Definition of self-sustaining
Check what you remember
Read the wording for your board, then hide it and explain self-sustaining in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Describes a sequence in which the neutrons released by fission go on to cause further fissions, so the reaction keeps going.
Topics that use self-sustaining
- Nuclear fission (AQA GCSE)
Related terms
- chain reaction
- control rods
- energy released per fission
- energy transfer to thermal store
- fissions per second
- kinetic energy of fragments
- meltdown
- moderator and coolant
Using self-sustaining in the exam
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