# "Describe and explain" questions — WJEC A-Level Physics (Wales)

> 8 questions · physics

## How to answer

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

## Sample questions

1. [A student holds a bar magnet near a pile of iron filings and some small pieces of plastic. Describe what happens to the …](https://www.gradenine.co.uk/q/a-student-holds-a-bar-magnet-4bc085f1)
2. [A student shines a ray of light from water into air. The ray hits the boundary between water and air at an angle. Descri…](https://www.gradenine.co.uk/q/a-student-shines-a-ray-of-5fd809d6)
3. [A sealed container holds a fixed quantity of gas at constant temperature. Describe and explain what happens to the press…](https://www.gradenine.co.uk/q/a-sealed-container-holds-a-fixed-62ea2ea0)
4. [A student uses an electric fan heater to warm a room. Describe the useful energy transfer and the waste energy transfer …](https://www.gradenine.co.uk/q/a-student-uses-an-electric-fan-6d87402e)
5. [A sample of radioactive material emits alpha particles. Describe the nature of an alpha particle and explain what happen…](https://www.gradenine.co.uk/q/a-sample-of-radioactive-material-emits-aa97441f)
6. [A sprinter runs 100 m along a straight track in 12.5 s, then immediately turns around and jogs back 40 m towards the sta…](https://www.gradenine.co.uk/q/a-sprinter-runs-100-m-along-cb410a3b)
7. [Describe the properties of laser light that make it different from the light produced by a torch, and explain why these …](https://www.gradenine.co.uk/q/describe-the-properties-of-laser-light-d8669dfc)
8. [A teacher demonstrates waves using a long slinky spring stretched along the floor. The teacher pushes and pulls one end …](https://www.gradenine.co.uk/q/a-teacher-demonstrates-waves-using-a-eb2f0c65)

## Related

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