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There are a number of different ways in which energy can be stored. Energy can be transferred from one to another by working and heating.

Some examples of everyday energy stores are:

• gravitational potential ‐ the energy stored in water at the top of a mountain is used for hydroelectric power
• kinetic ‐ the energy stored in a flywheel is used as an alternative to traditional batteries in a hybrid car
• thermal ‐ the energy stored in the concrete blocks of a night storage heater is released during the day
• nuclear ‐ the energy stored in the nucleus of an atom of uranium is released when the atom undergoes nuclear fission
• chemical ‐ the energy stored in the chemicals of a battery or in the fuel at a power station is transferred as an electric current to do work on domestic appliances

Learn more on energy stores and systems in this podcast

Listen to the full series on ����ý Sounds.