Edexcel IGCSE Physics 7.22 Reactor Shielding Questions
Follow radiation from the reactor core to its concrete or lead shielding and explain how absorption reduces the exposure of workers outside.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- Explain how reactor shielding absorbs high-energy neutrons and gamma radiation, reducing radiation that escapes to workers.
- Name concrete, lead or thick steel as suitable material for shielding around a nuclear reactor.
Edexcel IGCSE Physics 7.22 Reactor Shielding Questions question 1
[Maximum number: 2]
Some of the energy stored in the nuclei of atoms can be used to generate electricity.
A nuclear fission power station generates electricity.
Some of the daughter nuclei produced in nuclear fission are highly radioactive and emit high energy neutrons when they decay.
Explain which feature of a nuclear fission reactor reduces the risks from these high energy neutrons.
- to absorb high energy neutrons
- use of concrete / lead shielding
Accept:
- absorb / reduce strength of neutron radiation
- stop neutrons escaping
- concrete walls
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