WJEC GCSE Physics (Wales) · WJEC 3420U
2.8 Half-life
Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).
Practice questions on Half-life
- A hospital disposes of radioactive waste from a medical procedure. The waste contains a ra… (4 marks, Explain)
- A geologist uses a radioactive isotope to determine the age of a rock sample. The isotope … (4 marks, Explain)
- A nuclear power station uses a radioactive fuel rod. After the fuel rod is removed from th… (4 marks, Explain)
- A scientist is monitoring a radioactive isotope used in medical imaging. After 6 hours the… (4 marks, Explain)
- A radioactive sample has a half-life of 20 years. Explain what is meant by the term 'half-… (4 marks, Explain)