Nuclear Energy and Energy-Mass Equivalence (VCE SSCE Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
In what year did Einstein publish his famous equation ?
In what year did Einstein publish his famous equation ?
1905
What is nuclear fission?
What is nuclear fission?
Splitting large nucleus into smaller ones
Why are slow 'thermal' neutrons more effective at causing fission than fast neutrons?
Why are slow 'thermal' neutrons more effective at causing fission than fast neutrons?
Higher probability of being absorbed
How many neutrons are released on average per fission event of uranium-235?
How many neutrons are released on average per fission event of uranium-235?
2.5
How much more energy per kg does nuclear fission release compared to coal combustion?
How much more energy per kg does nuclear fission release compared to coal combustion?
3 million times
What defines a controlled chain reaction in a nuclear reactor?
What defines a controlled chain reaction in a nuclear reactor?
Only 1 of 2-3 neutrons causes fission
In a subcritical mass, how does neutron loss compare to neutron creation?
In a subcritical mass, how does neutron loss compare to neutron creation?
Loss is greater than creation
What is the primary function of moderators in nuclear reactors?
What is the primary function of moderators in nuclear reactors?
Slow down fast neutrons
What is the typical uranium-235 concentration in reactor-grade fuel?
What is the typical uranium-235 concentration in reactor-grade fuel?
3.5-4.5%
What is the critical mass of pure U-235 (sphere) with a beryllium reflector?
What is the critical mass of pure U-235 (sphere) with a beryllium reflector?
About 15 kg