Physics GCSE
control rods
What control rods means in Physics GCSE, as defined for AQA.
Definition of control rods
Check what you remember
Read the wording for your board, then hide it and explain control rods in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Usually boron, these absorb surplus neutrons without undergoing fission, mopping up the neutrons left over from each fission.
Topics that use control rods
- Nuclear fission (AQA GCSE)
Related terms
- chain reaction
- energy released per fission
- energy transfer to thermal store
- fissions per second
- kinetic energy of fragments
- meltdown
- moderator and coolant
- neutron absorption
Using control rods 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