In a pressurized water reactor (PWR), energy from nuclear fission is transferred using two separate water loops: the primary loop and the secondary loop. Describe how thermal energy is transferred from the reactor core to rotate the turbines, and explain how this dual-loop design contributes to radiation safety.
94 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity, covering 6.5.1 Uses of radioactivity, 6.5.2 Dangers of ionising radiation and precautions, 6.5.3 Half-life and radiation dangers, 6.5.4 Safety precautions for radiation exposure, and 6.5.5 Contamination and irradiation. Each one has a worked solution and a mark scheme showing where the marks go.