fossil fuel: see energy, sources of energy, sources of, origins of the power used for transportation, for heat and light in dwelling and working areas, and for the manufacture of goods of all kinds, among other applications.
..... Click the link for more information. ; fuel fuel, material that can be burned or otherwise consumed to produce heat. The common fuels used in industry, transportation, and the home are burned in air. The carbon and hydrogen in fuel rapidly combine with oxygen in the air in an exothermal reaction—one that
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fossil fuel

Any of a class of materials of biologic origin occurring within the Earth's crust that can be used as a source of energy. Fossil fuels include coal, petroleum, and natural gas. They all contain carbon and were formed as a result of geologic processes acting on the remains of (mostly) plants and animals that lived and died hundreds of millions of years ago. All fossil fuels can be burned to provide heat, which may be used directly, as in home heating, or to produce steam to drive a generator for the production of electricity. Fossil fuels supply nearly 90% of all the energy used by industrially developed nations.

fossil fuel

any naturally occurring carbon or hydrocarbon fuel, such as coal, petroleum, peat, and natural gas, formed by the decomposition of prehistoric organisms

Fossil fuel

Any naturally occurring carbon-containing material which when burned with air (or oxygen) produces (directly) heat or (indirectly) energy. Fossil fuels can be classified according to their respective forms at ambient conditions. Thus, there are solid fuels (coals); liquid fuels (petroleum, heavy oils, bitumens); and gaseous fuels (natural gas, which is usually a mixture of methane, CH₄, with lesser amounts of ethane, C₂H₆, hydrogen sulfide, H₂S, and numerous other constituents in small proportions).

One important aspect of the fossil fuels is the heating value of the fuel, which is measured as the amount of heat energy produced by the complete combustion of a unit quantity of the fuel. For solid fuels and usually for liquid fuels the heating value is quoted for mass, whereas for gaseous fuels the heating value is quoted for volume. The heating values are commonly expressed as British thermal units per pound (Btu/lb). In SI units the heating values are quoted in megajoules per kilogram (MJ/kg). For gases, the heating values are expressed as Btu per cubic foot (Btu/ft³) or as megajoules per cubic meter (MJ/m³). The table gives heating values of representative fuels. See Energy sources

Heating values of representative fuels
Fossil fuel	Btu/lb	Btu/ft³	MJ/k	MJ/m³
Natural gas		900		33.5
Petroleum	19,000		44.1
Heavy oil	18,000		41.8
Tar-sand bitumen	17,800		41.3
Coal
Lignite	8,000*		18.6
Subbituminous	10,500*		24.4
Bituminous	15,500*		36.0
Anthracite	15,000*		34.8
*Representative values are given because of the spread of subgroups with various heating values.

fossil fuel (redirected from Fossil energy)

fossil fuel

fossil fuel
(redirected from Fossil energy)