Nuclear fission and fusionIB MYP Physics: Mind map

Exam questions on Nuclear fission and fusion

1. A power station in France uses uranium-235 as fuel. In the reactor, a slow-moving neutron is absorbed by a uranium-235 nucleus. The nucleus then splits into two smaller nuclei and releases two or three more neutrons and a large amount of energy.
   Explain how the release of two or three neutrons in each fission can lead to a chain reaction.2 marks
2. In southern France, scientists are building an experimental reactor that will fuse isotopes of hydrogen to make helium. The Sun already releases its energy in a similar way.
   State two conditions needed in the core of a star for fusion to occur.2 marks
3. A country is considering building a nuclear fission power station that uses uranium-235 as its fuel. Engineers are explaining to the public how it would work and what would happen to the waste.
   Outline how a nuclear fission power station produces electricity.3 marks