Chain Reactions (AQA GCSE Physics): Quizzes
📚Quizzes
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10 questions from this quiz
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Practise the questions
10 questions from this quiz
What can start a chain reaction in nuclear fission?
What can start a chain reaction in nuclear fission?
Neutrons
Why can neutrons released from fission move around?
Why can neutrons released from fission move around?
They have kinetic energy
What happens when a neutron is absorbed by a large, unstable nucleus?
What happens when a neutron is absorbed by a large, unstable nucleus?
A second fission reaction occurs
Why are chain reactions difficult to control?
Why are chain reactions difficult to control?
Very difficult to stop
Why do chain reactions produce many fission reactions?
Why do chain reactions produce many fission reactions?
Many neutrons from each fission
What is the main function of control rods in a nuclear reactor?
What is the main function of control rods in a nuclear reactor?
Absorb excess neutrons
How do control rods limit fission reactions?
How do control rods limit fission reactions?
By absorbing neutrons that induce fission
Where are control rods used?
Where are control rods used?
Inside nuclear reactors
What type of reaction occurs in a nuclear weapon?
What type of reaction occurs in a nuclear weapon?
Uncontrolled nuclear fission
What does an uncontrolled chain reaction in a nuclear weapon lead to?
What does an uncontrolled chain reaction in a nuclear weapon lead to?
An explosion