HKDSE Physics E3 Chapter 4 Quick Summary: Energy Sources in Hong Kong: An overview of how Hong Kong relies on imported non-renewable energy like electricity, town gas, and diesel for transport and cooking. Electricity Generation & Fossil Fuels: A comparison of coal-fired and natural gas power plants, including the high efficiency of combined cycle operations and the fractional distillation of petroleum. Mass-Energy Equivalence & Binding Energy: Explanation of Einstein's equation, mass defect, and how binding energy per nucleon determines the stability of an atom. Nuclear Fission Reactor: A breakdown of how a nuclear reactor works, including the roles of uranium fuel rods, moderators, control rods, and pressurized water coolants. Nuclear Power & Environment: An analysis of the environmental advantages and disadvantages of nuclear fission, alongside the future potential of clean nuclear fusion. Instructor: Notes prepared by Billy Sir (CUHK Physics Master) for HKDSE exam preparation.