| A | B |
|---|
| generator | a device that converts kinetic energy into electrical energy, producing electricity |
| *dynamo | a device that produces electricity by converting kinetic energy into electrical energy |
| turbine | a set of rotating blades connected to a rotating shaft |
| renewable energy resource | a source of energy that does not run out when it is used |
| non-renewable energy resource | an energy resource that can be used up; there is a limited supply, e.g. fossil fuels such as coal, gas and oil |
| wasted energy | energy that does not do anything useful |
| energy efficient | describes how well a device changes energy |
| *transformer | a device for reducing or increasing the voltage of an electric power supply, usually to allow a particular piece of electrical equipment to be used |
| *power pylon | a steel tower used for carrying electrical wires high above the ground |
| *substation | a place where the strength of electric power from a power station is reduced before it is passed on to homes and businesses |
| fuel | substance that produces useful heat energy as it is burnt |
| complete combustion | burning which occurs in plenty of oxygen, producing only carbon dioxide and water vapor |
| incomplete combustion | burning which occurs when there is not enough oxygen so that unburnt carbon and carbon monoxide are produced in addition to carbon dioxide and water |
| *hydrocarbon | a compound made up of only carbon and hydrogen |
