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Edexcel IGCSE Physics 7.21 Control Rods and Moderator Questions

Practise matching reactor parts to their functions, especially how control rods absorb neutrons and moderators slow neutrons in fission.

Syllabus
First assessment 2019
Course
Physics 4PH1

Exam points

  • distinguish control rods from moderators in reactor diagrams or tick-box tables
  • state that boron control rods absorb excess neutrons to regulate the reaction
  • state that a graphite moderator slows neutrons by reducing their kinetic energy

Edexcel IGCSE Physics 7.21 Control Rods and Moderator Questions question 1

[Maximum number: 1]

Some of the energy stored in the nuclei of atoms can be used to generate electricity.

A nuclear fission power station generates electricity.

State the role of the moderator in a nuclear fission power station.

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