4.+Energy+converters..

Most machines convert one form of energy into another. For example, an electric jug coverts electrical energy in the wires into heat energy in the hot water. In the case of a jug, that energy originlly came from the sun in the form of light and heat. It was then stored in some form e.g. water in a hydro lake which has gravitational potential energy (GPE). This was then converted into electrical energy in the generators by falling water in turbines.
 * Energy Converters**