Nuclear fission and fusion This quiz has 10 questions. For each question you have to decide which box to click. BEWARE ! One mistake and you have to start again! Next slide

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Occurs in uranium and plutonium Nuclear fission Nuclear fusion

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Can lead to a chain reaction Nuclear fission Nuclear fusion

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Happens in the Sun Nuclear fission Nuclear fusion

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Involves hydrogen nuclei joining to make helium Nuclear fission Nuclear fusion

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Releases neutrons which can trigger the next event Nuclear fission Nuclear fusion

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The source of energy in a nuclear power station Nuclear fission Nuclear fusion

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Always produces new nuclei which are radioactive Nuclear fission Nuclear fusion

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Large nuclei splitting into smaller ones Nuclear fission Nuclear fusion

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Could be developed for power stations in the future Nuclear fission Nuclear fusion

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Releases two or three spare neutrons Nuclear fission Nuclear fusion

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Occurs in uranium and plutonium Nuclear fission These are both elements with high atomic number. They have a large nucleus and this can split up. Next slide

Can lead to a chain reaction Nuclear fission Spare neutrons are produced and this means there can be a chain reaction Next slide

Happens in the Sun Nuclear fusion The Sun is made up mainly of hydrogen and helium. Its energy comes from the nuclear fusion of hydrogen into helium. Next slide

Involves hydrogen nuclei joining to make helium Nuclear fusion This is in effect a definition of nuclear fusion Next slide

Releases neutrons which can trigger the next event Nuclear fission When the large nucleus breaks up, it produces extra neutrons which are then used in the chain reaction. Next slide

The source of energy in a nuclear power station Nuclear fission Nuclear power station do have a uranium or plutonium fuel in them which undergoes nuclear fission. Next slide

Always produces new nuclei which are radioactive Nuclear fission When the large nucleus breaks up, it produces two smaller nuclei. They are unstable so this means they are radioactive. Next slide

Large nuclei splitting into smaller ones Nuclear fission This is a definition of nuclear fission Next slide

Could be developed for power stations in the future Nuclear fusion The key word here is “could”. It involves recreating the Sun in a power station. It is a long-term research project but it could be done one day. Next slide

Releases two or three spare neutrons Nuclear fission When a large nucleus breaks up, it does release spare neutrons and this is the basis of a chain reaction Next slide

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