Appliances transfer energy but not all the energy is transferred in useful ways. The choice of appliance is influenced by their efficiency and cost effectiveness.
Forms of energy
You should be able to recognise the main types of energy. One way to remember the different types of energy is to learn this sentence:
Most Kids Hate Learning GCSE Energy Names.
Each capital letter is the first letter in the name of a type of energy:
- kinetic (movement energy)
- heat (thermal energy)
- gravitational potential
- elastic potential
Types of energy explained
Type of energyDescription
energy in magnets and electromagnets
the energy in moving objects – also called movement energy
also called thermal energy
also called radiant energy
stored energy in raised objects
stored energy in fuel, foods and batteries
energy released by vibrating objects
energy in moving charges or static electric charges
stored energy in stretched or squashed objects
Energy transfer diagrams
Different types of energy can be transferred from one type to another. Energy transfer diagrams show each type of energy, whether it is stored or not, and the processes taking place as energy is transferred.
This energy transfer diagram shows the useful energy transfer in a car engine. You can see that a car engine transfers chemical energy, which is stored in the fuel, into kinetic energy in the engine and wheels.
This diagram shows the energy transfer diagram for the useful energy transfer in an electric lamp. You can see that…