This exam tips covers Exam Tips for Pressure within Pressure for GCSE Physics. Revise Pressure in Forces for GCSE Physics with 15 exam-style questions and 12 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 15 of 16 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 15 of 16
Practice
15 questions
Recall
12 flashcards
💡 Exam Tips for Pressure
🎯 Common Question Types:
- P = F/A calculation: "Calculate the pressure exerted by..." (2-3 marks)
- Rearrangement: "Calculate the force / area if pressure is..." (3 marks)
- "Explain why" questions about sharp knives, snowshoes, stilettos (3-4 marks)
- Fluid pressure: "Explain why pressure increases with depth" (2-3 marks)
- Atmospheric pressure: "Why does pressure decrease with altitude?" (2 marks)
- Higher: P = hρg calculations, upthrust explanations
📝 Key Command Words:
- Calculate — show the formula, substitute values, give units
- Explain why — link cause to effect using the equation (e.g. smaller area → greater pressure)
- State — brief answer, no explanation needed (e.g. "pressure acts in all directions")
- Describe — explain what happens, include direction of change
⚠️ Common Mistakes to Avoid:
- Writing the formula as P = F × A (wrong — it's F divided by A)
- Forgetting units — always write Pa for pressure in final answers
- Saying fluid pressure only acts "downward" — it acts in ALL directions
- Not linking "smaller area → greater pressure" explicitly in explanation questions
- Using cm² instead of m² in calculations without converting first (1 m² = 10,000 cm²)