Energy sources that do not come from fossil fuels. A renewable or inexhaustible resource.
The capture of energy from moving water for a useful purpose; an alternative energy source.
Heat from the center of the earth that is used as an energy source, come to the surface in the form of volcanoes, fumaroles, hot springs and geysers.
are often made from crops that can be replanted or organic waste matter, that is constantly replenishing itself. The most popular type is ethanol.
a form of solar energy, due to uneven heating of the atmosphere by the sun, that converts the kinetic energy of wind into mechanical power.
The process of obtaining useful energy from the Sun via solar panels. An inexhaustible resource.
the use of controlled nuclear reactions to produce steam, which in turn drives turbines to produce electricity
Resources that takes longer than a person's life time in order to make. Nature cannot replace quick enough to meet people's needs.
Resources that nature can provide again and again in a relatively short period of time.
Resources that are never used up as they are being used.
An engine powered by the wind designed to produce energy from an inexhaustible source.