Energy

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Energy efficiency equations

Useful energy out / total energy in - (for a decimal answer)

Or

Useful energy out/ total energy in x 100 - (for a percentage answer)

Always show energy in J

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Energy efficiency total percentage

The total efficiency will always be below 100%

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Kinetic energy

Aka movement energy- the energy in moving objects

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Electrical energy

Energy in moving charges or static electric charges

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Heat energy

Aka thermal energy

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Elastic potential energy

Stored energy in stretched or squashed objects

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Light energy

Aka radiant energy

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Nuclear energy

Stored in the nuclei of atoms

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Gravitational potential energy

Energy stored in raised objects

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Internal energy

Stored in an thermodynamic system

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Chemical energy

Stored energy in foods fuel and batteries

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Strain energy

Released when atoms in a molecule rearrange themselves in a chemical reaction

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Sound energy

Energy released by vibrating objects

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Sankey diagram

Summarises all the energy and it's whereabouts.

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Conservation of energy

Energy that can neither be created or destroyed

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Useful energy

Energy which is transferred to where it is needed and as the form it is needed.

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