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Paper 1
Energy Stores
Both
Use energy store language in every answer.
Key Facts
- Last-minute priority: store vs transfer language.
- Thermal energy increases when energy is dissipated.
- Energy transfers can be by heating, radiation, or mechanical work.
- Total energy in a closed system is constant.
Key Equations
E = P × t
Efficiency = useful output / total input
Topics Covered
Energy Stores List
What you need to know
- •Know all 8 stores: kinetic, thermal, chemical, gravitational, elastic, nuclear, magnetic, electrostatic.
Exam Tips
- Always name the store, not the transfer.
Conservation of Energy
What you need to know
- •Energy cannot be created or destroyed, only transferred.
Exam Tips
- Mention energy dissipated as thermal to surroundings.
Key Terms
Energy store
A way energy is held within a system.
Dissipated
Spread to the surroundings and harder to use.
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Common Exam Questions
Name the energy stores involved when a stretched spring is released and launches a toy.
3 marksmediumPaper 1
Model Answer
Elastic potential to kinetic to thermal/sound.
What examiners want to see
- ✓Use store names and show the sequence.
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