# "Describe and explain" questions — WJEC GCSE Physics (Wales)

> 5 questions · physics

## How to answer

"describe and explain" questions from WJEC GCSE Physics (Wales). Read the rubric carefully — the marking points cluster into scientific ideas rather than free-form prose.

## Sample questions

1. [Red-shift observations of distant galaxies provide evidence about the universe. Describe what red-shift is and explain w…](https://www.gradenine.co.uk/q/red-shift-observations-of-distant-galaxies-provide-4c345202)
2. [A radioactive source emits beta particles. Describe the nature of a beta particle and explain why beta particles are les…](https://www.gradenine.co.uk/q/a-radioactive-source-emits-beta-particles-53b72490)
3. [A solenoid is connected to a direct current (d.c.) supply. Describe the magnetic field produced inside and outside the s…](https://www.gradenine.co.uk/q/a-solenoid-is-connected-to-a-a799b4df)
4. [A student uses a laptop computer for several hours each day. Describe how energy is usefully transferred by the laptop a…](https://www.gradenine.co.uk/q/a-student-uses-a-laptop-computer-f2d88451)
5. [Describe what is meant by alpha decay and explain why the nucleus of an atom undergoes radioactive decay.](https://www.gradenine.co.uk/q/describe-what-is-meant-by-alpha-f5dac90f)

## Related

- [WJEC GCSE Physics (Wales) revision notes](https://www.gradenine.co.uk/learn/wjec-gcse-physics-wales)
- [WJEC GCSE Physics (Wales) past papers](https://www.gradenine.co.uk/past-papers/wjec-gcse-physics-wales)
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