biomass organic matter that can be used as a source of energy
coal a natural soft rock formed from fossilized plants that can be burned to create electricity in a power plant
electricity electric current
energy the ability to do work
energy efficiency using less energy than normal to perform the same function
compact fluorescent light bulb a light bulb that uses a phosphor coating to transform ultraviolet energy into visible light
fossil fuel a product of decomposition of prehistoric organisms that can be burned to create electricity in a power plant (e.g. coal, natural gas and oil)
fuel something consumed to produce energy
global warming the occurrence of warming in the atmosphere because of pollution
hydroelectric electricity captured from moving water
natural gas a mixture of hydrocarbon gases that occurs with petroleum deposits, principally methane, and is used as a fuel and in the manufacture of organic compounds
nonrenewable resource a natural resource that has a limited supply that can not be replaced quickly
pollution a material that is harmful to living things
renewable resource a natural resource from the earth that can be quickly replenished
solar power power, such as electricity, generated from the sun
sustainable energy ability to supply our energy demands today without diminishing the supply for future generations