Nuclear Fission and Fusion
Physics ⇒ Modern Physics
Nuclear Fission and Fusion starts at 11 and continues till grade 12.
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Describe the main difference in the waste products of nuclear fission and fusion.
Describe the main safety concern associated with nuclear fission reactors.
Describe the role of a moderator in a nuclear reactor.
Describe what is meant by a 'chain reaction' in the context of nuclear fission.
Explain the difference between nuclear fission and nuclear fusion.
Explain why a chain reaction does not occur in natural uranium without enrichment.
Explain why nuclear fusion requires higher temperatures than nuclear fission.
Explain why the mass of a nucleus is less than the sum of the masses of its individual nucleons.
A nuclear reactor uses control rods to regulate the rate of fission. What material are these rods commonly made of? (1) Lead (2) Graphite (3) Cadmium or boron (4) Uranium
Which isotope is commonly used as fuel in nuclear fission reactors? (1) Uranium-238 (2) Uranium-235 (3) Plutonium-239 (4) Thorium-232
Which of the following best describes nuclear fission? (1) The splitting of a heavy nucleus into two lighter nuclei (2) The combining of two light nuclei to form a heavier nucleus (3) The emission of alpha particles from a nucleus (4) The conversion of a neutron into a proton
Which of the following best explains why nuclear fusion is difficult to achieve on Earth? (1) Lack of fuel (2) High cost of uranium (3) Need for extremely high temperature and pressure (4) Lack of neutrons
Fill in the blank: In a nuclear fission reaction, the total mass of the products is _______ than the total mass of the reactants.
Fill in the blank: The device used to achieve controlled nuclear fusion in laboratories is called a _______.
Fill in the blank: The equation E = mc2 was proposed by _______.
Fill in the blank: The minimum mass of fissile material required to sustain a chain reaction is called the _______ mass.
True or False: In both fission and fusion, the total number of nucleons is conserved.
True or False: Nuclear fission can occur spontaneously in some isotopes.
True or False: Nuclear fusion is the process that powers the Sun.
True or False: The binding energy per nucleon increases with increasing mass number for all nuclei.
