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GCSE Physics · key term
Energy transferred to thermal stores and spread through the surroundings, making it less available for useful transfers.
Used by AQA, Edexcel and OCR
Specification 4.1.1.1, 4.1.2.1, 4.1.2.2 · Paper 1
Energy that has spread into the thermal stores of the surroundings and is less available for a useful purpose.
Energy transferred to the surroundings and stored in a less useful way, commonly in their thermal energy stores.
Energy that has spread into less useful stores, usually the thermal energy store of the surroundings.
Specification 3.3, 3.5, 3.7, 3.11, 3.12, 8.1, 8.11, 8.15, 9.10 · Paper 1, Paper 2
Energy transferred in an unwanted way and usually spread into the surroundings, where it is less useful.
Energy transferred away from a useful store and spread among the thermal stores of the surroundings, making it less useful.
Energy spread into the surroundings, making it difficult to transfer usefully again.
Energy transferred to the surroundings and spread among their thermal stores, making it less useful for the intended purpose.
Energy spread into the surroundings and stored in less useful ways, commonly by heating.
Energy transferred into less useful stores, commonly the thermal stores of objects and their surroundings.
Energy that has spread into the thermal stores of objects and the surroundings, making it less available for useful transfers.
Energy transferred to less useful stores, often spreading into the surroundings by heating.
Energy that spreads into the surroundings, making it less useful for the intended purpose.
Specification P7.1b, P7.2d · Paper 2 (Foundation), Paper 4 (Higher)
Energy spread into the surroundings so that it is less useful for the intended purpose.
Energy transferred to less useful stores and spread into the surroundings rather than destroyed.
Paper 1, Paper 2
Energy transferred in unwanted ways and spread into less useful stores in the surroundings.
In an energy-accounting calculation, check that all changes add to the total energy transferred. Include dissipated energy where appropriate.
For a real process, include relevant dissipated energy transfers, such as heating of the surroundings or sound, rather than implying that all energy reaches the intended store.
Do not describe dissipated energy as destroyed or lost. It is transferred to less useful stores, usually thermal stores in the surroundings.
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