4.1.1.1 · Energy Stores & Systems
What is a system in physics?
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An object or group of objects.
AQA GCSE Physics · Topic 1
Energy flashcards
44 cards on Energy, every one written against a numbered point in section 4.1 of the AQA Physics spec. Here’s what the topic covers, and 4 cards to try.
- 44Flashcards
- 7Sub-topics
- 1Higher only
- 1Triple only
Try 4 cards from Energy.
Answer each one in your head, then check. In the app, how well you knew it decides when you see it again.
4.1.1.2 · Calculating Energy
What is the equation for kinetic energy? Give units.
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Eₖ = ½mv². Kinetic energy (J) = 0.5 × mass (kg) × speed² (m/s)².
4.1.1.4 · Power & Work
What is power?
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The rate at which energy is transferred, or the rate at which work is done. 1 watt = 1 joule per second.
4.1.2.2 · Efficiency
What are the two equations for efficiency?
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Efficiency = useful output energy transfer ÷ total input energy transfer. Efficiency = useful power output ÷ total power input. Multiply by 100 for a percentage.
- +40more Energy cards in the app, shown to you just before you’d forget them.Join the waitlist →
What’s in Energy?
Every part of section 4.1 of the AQA spec, and how many cards cover it. Higher-only cards are hidden for Foundation students. Cards only on the separate Physics GCSE are hidden for Combined Science.
- 4.1.1.1Energy Stores & Systems6 cards
- 4.1.1.2Calculating Energy8 cards
- 4.1.1.3Specific Heat Capacity5 cards
- 4.1.1.4Power & Work4 cards
- 4.1.2.1Conservation & Dissipation7 cards
- 4.1.2.2Efficiency5 cards
- 4.1.3Energy Resources9 cards
Required practicals in this topic.
The method, the variables and a worked example for each.
Launching November 2026
The other 40 cards are in the app.
revolve. shows you each Energy card just before you’d forget it, so ten minutes a day is enough. It opens to students soon: join the waitlist and we’ll email you once, when it does.