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Nuclear chain reactionsWhen a uranium-235 nucleus undergoes induced fissionafter collision with a neutron, it breaks up in...
Nuclear chain reactionsWhen a uranium-235 nucleus undergoes induced fissionafter collision with a neutron, it breaks up in...
Nuclear chain reactionsWhen a uranium-235 nucleus undergoes induced fissionafter collision with a neutron, it breaks up in...
Nuclear chain reactionsWhen a uranium-235 nucleus undergoes induced fissionafter collision with a neutron, it breaks up in...
Energy from induced fissionA nuclear reactor uses a controlled chain reaction to produceheat to produce steam for a genera...
Energy from induced fissionA nuclear reactor uses a controlled chain reaction to produceheat to produce steam for a genera...
Energy from induced fissionA nuclear reactor uses a controlled chain reaction to produceheat to produce steam for a genera...
Energy from induced fissionA nuclear reactor uses a controlled chain reaction to produceheat to produce steam for a genera...
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  1. 1. Nuclear chain reactionsWhen a uranium-235 nucleus undergoes induced fissionafter collision with a neutron, it breaks up into two smallernuclei and two neutrons. These are called fission neutrons. 1 of 39 © Boardworks Ltd 2010
  2. 2. Nuclear chain reactionsWhen a uranium-235 nucleus undergoes induced fissionafter collision with a neutron, it breaks up into two smallernuclei and two neutrons. These are called fission neutrons.These fission neutrons can go on to cause further fissionevents, which will produce further neutrons, and so on,causing a chain reaction. chain reactionThe smallest amountof mass needed tosustain a chainreaction is called acritical mass. fission neutron 2 of 39 © Boardworks Ltd 2010
  3. 3. Nuclear chain reactionsWhen a uranium-235 nucleus undergoes induced fissionafter collision with a neutron, it breaks up into two smallernuclei and two neutrons. These are called fission neutrons.These fission neutrons can go on to cause further fissionevents, which will produce further neutrons, and so on,causing a chain reaction. 3 of 39 © Boardworks Ltd 2010
  4. 4. Nuclear chain reactionsWhen a uranium-235 nucleus undergoes induced fissionafter collision with a neutron, it breaks up into two smallernuclei and two neutrons. These are called fission neutrons.These fission neutrons can go on to cause further fissionevents, which will produce further neutrons, and so on,causing a chain reaction. chain reactionThe smallest amountof mass needed tosustain a chainreaction is called acritical mass. fission neutron 4 of 39 © Boardworks Ltd 2010
  5. 5. Energy from induced fissionA nuclear reactor uses a controlled chain reaction to produceheat to produce steam for a generator. Apart from the sourceof heat, it works in the same way as a coal-fired power station. 5 of 39 © Boardworks Ltd 2010
  6. 6. Energy from induced fissionA nuclear reactor uses a controlled chain reaction to produceheat to produce steam for a generator. Apart from the sourceof heat, it works in the same way as a coal-fired power station.1. Reactorproducesheat. 6 of 39 © Boardworks Ltd 2010
  7. 7. Energy from induced fissionA nuclear reactor uses a controlled chain reaction to produceheat to produce steam for a generator. Apart from the sourceof heat, it works in the same way as a coal-fired power station.1. Reactorproducesheat. 2. Hot coolant from core heats water to produce steam. 7 of 39 © Boardworks Ltd 2010
  8. 8. Energy from induced fissionA nuclear reactor uses a controlled chain reaction to produceheat to produce steam for a generator. Apart from the sourceof heat, it works in the same way as a coal-fired power station.1. Reactor 3. Steam powersproduces turbine generator.heat. 2. Hot coolant from 4. Steam cooled core heats water to and condensed by produce steam. cooling tower. 8 of 39 © Boardworks Ltd 2010

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