Nuclear Energy and Applications
Physics ⇒ Modern Physics
Nuclear Energy and Applications starts at 12 and continues till grade 12.
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Define the term 'critical mass' in the context of nuclear fission.
Describe one medical application of nuclear energy.
Describe the chain reaction in nuclear fission.
Describe the function of shielding in a nuclear reactor.
Explain the difference between nuclear fission and nuclear fusion.
Explain the role of a coolant in a nuclear reactor.
A nuclear power plant uses uranium-235 as fuel. If each fission event releases 3 neutrons on average, explain why not all of these neutrons contribute to sustaining the chain reaction.
A nuclear reactor is operating at a steady power output. If the reactor's thermal efficiency is 33% and it produces 900 MW of electrical power, calculate the rate at which nuclear energy is being released in the reactor core. (Give your answer in MW.)
Which isotope is commonly used as fuel in nuclear reactors?
(1) Uranium-235
(2) Carbon-14
(3) Iodine-131
(4) Plutonium-239
Which of the following is a fusion reaction?
(1) 235U + n → 141Ba + 92Kr + 3n
(2) 2H + 3H → 4He + n
(3) 14C → 14N + e-
(4) 60Co → 60Ni + e-
Which of the following is a major concern regarding nuclear waste?
(1) High cost of disposal
(2) Long-term radioactivity
(3) Risk of leakage
(4) All of the above
Which of the following is a major source of background radiation?
(1) Cosmic rays
(2) Nuclear power plants
(3) X-ray machines
(4) All of the above
The control rods in a nuclear reactor are used to _______ the rate of the fission reaction.
The energy released in a nuclear reaction is due to the conversion of _______ into energy.
The isotope used in most smoke detectors is _______.
The process of slowing down neutrons in a nuclear reactor is called _______.
A nuclear power plant uses the heat from nuclear fission to produce steam, which drives turbines to generate electricity. True or False?
Nuclear fission is the process in which a heavy nucleus splits into two or more lighter nuclei. True or False?
The binding energy per nucleon is generally highest for nuclei with mass number around 56. True or False?
The main reason nuclear fusion is not yet used for commercial power generation is because it is difficult to achieve and sustain the necessary conditions for fusion. True or False?
