Induced fission (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What happens when uranium-235 absorbs a neutron?
What happens when uranium-235 absorbs a neutron?
It splits into daughter nuclei & neutrons
What is the key characteristic of thermal neutrons?
What is the key characteristic of thermal neutrons?
Low kinetic energy
Why are thermal neutrons preferred over high-energy neutrons in fission?
Why are thermal neutrons preferred over high-energy neutrons in fission?
They are more likely to be absorbed
What is critical mass?
What is critical mass?
Minimum mass for sustained chain reaction
How much energy is released per fission event in uranium-235?
How much energy is released per fission event in uranium-235?
Around MeV
What is the primary function of the moderator in a nuclear reactor?
What is the primary function of the moderator in a nuclear reactor?
Slow neutrons to thermal speeds
Which materials are commonly used as moderators?
Which materials are commonly used as moderators?
Water and graphite
What is the main purpose of control rods in a nuclear reactor?
What is the main purpose of control rods in a nuclear reactor?
Absorb excess neutrons
Which materials are used in control rods due to their neutron-absorbing properties?
Which materials are used in control rods due to their neutron-absorbing properties?
Boron and cadmium
What property must coolants have to be effective in nuclear reactors?
What property must coolants have to be effective in nuclear reactors?
High specific heat capacity