Physics » Energy

Energy

This page covers:

Energy stores, conservation of energy, gravitational potential energy stores, kinetic energy

KS3 - Energy recap

Energy is the ability to do work.

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BBC Bitesize - Energy

Key Words

Revision TipsEnergy stores - where energy is stored. 8 energy stores are:

  • Thermal
  • Kinetic
  • Gravitational potential
  • Elastic potential
  • Chemical
  • Magnetic
  • Electrostatic
  • Nuclear

Energy transfer - energy is moved from one store to another.

Work done - same as energy transfer.

Closed systems - somewhere where energy does not enter or leave.

Conservation of Energy Principle - Energy can be transferred usefully, stored or dissipated but can never be created or destoyed.

Dissipated energy - when energy is transfered not all of the energy moves usefully to a store, instead it becomes wasted.

Joule (J) - What energy is measured in. 1000 J = 1 kJ (kilo-joule).


 


EQUATION Kinetic Energy

Kinetic Energy Store Equation

Kinetic Energy Worksheet

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EQUATION Gravitational Potential Energy

Gravitational Energy Equation

Gravitational Potential Energy Worksheet

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Potential Kinetic Energy