5 (a) Fast neutrons are released during nuclear fission - Edexcel - GCSE Physics - Question 5 - 2014 - Paper 1
Question 5
5 (a) Fast neutrons are released during nuclear fission.
(i) Three different components of a nuclear fission reactor are shown.
Three different materials used in a ... show full transcript
Worked Solution & Example Answer:5 (a) Fast neutrons are released during nuclear fission - Edexcel - GCSE Physics - Question 5 - 2014 - Paper 1
Step 1
Draw one line from each component to the material it contains.
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Answer
Fuel - Uranium (releases neutrons)
Control rod - Boron (absorbs neutrons)
Moderator - Graphite (slows neutrons)
Step 2
Suggest why a nuclear fusion reactor does not need anything to slow these neutrons down.
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Answer
Neutrons do not need to be captured (by another nucleus) or do not play a part in the fusion process. In fusion reactions, the conditions allow the reaction to occur without the need for moderated neutrons.
