Nuclear Fission and Fusion
Physics ⇒ Modern Physics
Nuclear Fission and Fusion starts at 11 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Nuclear Fission and Fusion.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
A nuclear power plant produces 1 GW (1 × 109 W) of electrical power. If the efficiency of the plant is 33%, what is the rate of energy released by fission in the reactor?
A nuclear reactor uses a moderator. What is the purpose of the moderator?
A sample of uranium-235 undergoes fission and releases 3.2 × 1013 J of energy. How many atoms of uranium-235 have undergone fission? (Energy per fission = 200 MeV; 1 eV = 1.6 × 10-19 J)
Calculate the energy equivalent (in joules) of a mass defect of 0.001 kg using E = mc2 (c = 3 × 108 m/s).
Calculate the energy released (in MeV) when 1 atom of uranium-235 undergoes fission, given that the average energy released per fission is about 200 MeV.
Describe the main difference between nuclear fission and nuclear fusion.
Describe what is meant by a chain reaction in the context of nuclear fission.
Explain the role of control rods in a nuclear reactor.
Explain why nuclear fusion is considered a cleaner source of energy compared to nuclear fission.
Explain why the products of nuclear fusion have a lower mass than the reactants.
