4-mark practice questions — WJEC GCSE Physics (Wales)
90 questions · physics · View as Markdown
How to answer
4-mark questions are the shortest levels-of-response band. Aim for four scientific ideas, each in its own short sentence.
Sample questions
- A scientist is monitoring a radioactive isotope used in medical imaging. After 6 hours the count rate has fallen from 80…
- A radioactive source emits beta particles. Explain what a beta particle is and describe how beta emission changes the nu…
- A musician plucks a guitar string. The string vibrates and produces a sound wave that travels through the air to a liste…
- Astronomers observe that light from distant galaxies is red-shifted. Explain what red-shift tells us about the universe,…
- Explain how the refraction of seismic waves as they travel through the Earth provides evidence for the internal structur…
- A hospital disposes of radioactive waste from a medical procedure. The waste contains a radioactive isotope with a half-…
- A tumble dryer has a power-rating of 2.5 kW. Explain what is meant by the term power-rating and describe how the amount …
- A nuclear power station uses a radioactive fuel rod. After the fuel rod is removed from the reactor, it must be stored s…