BRAINCAKE

Energy

AQA GCSE Combined ScienceTopic 18 of 246 lessons

Revision notes for Energy in AQA Combined Science: Trilogy (8464). Every lesson in BrainCake comes with R.E.C.I.P.E. recall steps, a quick check and spaced reviews.

  1. Energy stores and systemsA system is an object or a group of objects.
  2. Changes in energyThe energy in a moving object is stored in its kinetic store.
  3. Energy changes in systemsWhen a substance is heated, energy is stored in its thermal store and its temperature rises.
  4. PowerPower is the rate at which energy is transferred, or the rate at which work is done.
  5. Energy transfers in a systemEnergy can be transferred usefully, stored or dissipated, but it can never be created or destroyed.
  6. EfficiencyNo device transfers all of its input energy usefully.

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