Exam Tips for Energy Stores and Systems
Part of Energy Stores & Systems — GCSE Physics
This exam tips covers Exam Tips for Energy Stores and Systems within Energy Stores & Systems for GCSE Physics. Revise Energy Stores & Systems in Energy for GCSE Physics with 14 exam-style questions and 30 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 19 of 20 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 19 of 20
Practice
14 questions
Recall
30 flashcards
💡 Exam Tips for Energy Stores and Systems
🎯 Common Question Types:
- "Describe the energy transfers when..." (2-4 marks — name the stores and pathway)
- "Explain why energy is wasted in this process" (2-3 marks — mention thermal store and friction/resistance)
- "State the energy store at point X" (1 mark — name it precisely)
- "Draw a Sankey diagram" (3-4 marks — widths must be proportional)
📝 Key Command Words:
- State: Name the energy store with no explanation needed
- Describe: Identify all stores and pathways in order
- Explain: Give the reason WHY energy transfers as it does
- Calculate: Use an equation and show all working
⚠️ Common Mistakes to Avoid:
- Saying energy is "used up" or "lost" — it is transferred and dissipated
- Forgetting to mention wasted energy — real processes always have some
- Confusing stores and pathways — kinetic is a STORE; mechanical work is a PATHWAY
- Not being specific — "light energy" is vague; "radiated as light from the bulb" is better
Quick Check: A student says "the car's energy was lost due to friction." Rewrite this statement using correct scientific language.
The car's kinetic energy was transferred to the thermal store of the brakes and surroundings via heating (due to friction). Energy is never lost — it is dissipated.
Quick Check: Name the transfer pathway when a speaker converts electrical energy into sound. What stores are involved?
The transfer pathway is mechanical work (vibrations of the speaker cone). Energy transfers from the electrical energy store (mains/battery) to the kinetic store of vibrating air particles (sound). Some energy also transfers to the thermal store (resistance heating the speaker coil).