7 Radioactivity and particles

Practice questions on Radioactivity and particles

• A uranium-235 nucleus absorbs a slow-moving neutron and undergoes nuclear fission. Describ… (4 marks, Describe and Explain)
• In a nuclear power station, uranium-235 is used as fuel. Describe the roles of the control… (4 marks, Describe)
• A hospital worker handles radioactive sources used in medical procedures. Explain why irra… (4 marks, Explain)
• A scientist is investigating the half-life of a radioactive isotope in a laboratory. Expla… (4 marks, Explain)
• A science museum exhibit displays two radioactive samples side by side. A label states tha… (4 marks, Explain)
• A geologist discovers a rock sample that contains a radioactive isotope. She uses a Geiger… (4 marks, State and Explain)
• A nuclear power station produces radioactive waste. A safety officer states that one sampl… (4 marks, State)
• A hospital medical physicist states that a sample of technetium-99m has an activity of 800… (4 marks, State and Explain)
• A radioactive isotope used in smoke detectors undergoes alpha decay. Explain why an alpha … (4 marks, Explain)
• A student measures the activity of a radioactive sample using a Geiger-Muller tube and rec… (4 marks, Explain)
• A technician works in a nuclear research facility and is required to handle different radi… (4 marks, Explain)
• A factory uses a radioactive source to monitor the thickness of aluminium sheets as they a… (4 marks, Describe)
• A chain reaction occurs when uranium-235 undergoes nuclear fission in a nuclear reactor. D… (4 marks, Describe and Explain)
• Explain why nuclear fusion does not occur at low temperatures and pressures, and describe … (4 marks, Explain and Describe)
• Nuclear fusion releases large amounts of energy and is the process that powers stars. Expl… (4 marks, Explain)