The Physics Question Bank

Extended-response questions worth 6 marks appear on every GCSE Physics paper. They often ask you to describe a method, explain a process or compare two things. Lots of students write plenty but still don’t get full marks, usually because their answer isn’t organised.

How they’re marked

These questions are usually marked using levels rather than one mark per point. The examiner reads your whole answer and decides which level it fits. To reach the top level, your answer needs to be detailed, accurate and in a logical order.

A simple plan

1. Read the command word. “Describe” means say what happens. “Explain” means say why it happens. “Evaluate” means give points for and against, then a conclusion.
2. Jot down key words in the margin before you start writing.
3. Put your points in order. For a method, number your steps.
4. Use physics vocabulary such as resultant force, energy store, current or potential difference.
5. Re-read the question at the end to check you’ve answered all of it.

Example question

Describe how you could find the density of an irregularly shaped stone. (6 marks)

A strong answer would include:

1. Measure the mass of the stone using a top-pan balance.
2. Fill a displacement (eureka) can with water up to the spout.
3. Place a measuring cylinder under the spout.
4. Carefully lower the stone into the can so it is fully submerged.
5. Measure the volume of water collected in the measuring cylinder. This equals the volume of the stone.
6. Calculate density using density = mass ÷ volume.

Extra detail that pushes you to the top level: read the measuring cylinder at eye level from the bottom of the meniscus, and repeat the measurements to calculate a mean.

Common mistakes

• Missing out obvious steps, such as measuring the mass.
• Writing steps in a jumbled order.
• Using vague words like “power” or “energy” when you mean something specific.
• Answering a different question from the one asked.

The required practicals are a favourite source of 6-mark questions, so make sure you can describe each method step by step.