fossil fuel

A source of energy that comes from ancient, decomposed organisms is a fossil fuel. Natural gas and coal are both examples of fossil fuels.

Today's fossil fuels began forming millions of years ago, before dinosaurs lived on the earth. Over time, these plants and other organisms died, decomposed, and sank to the bottom of the ocean. Over time, heat and pressure eventually turned them into coal, oil, and gas. While the world depends on fossil fuels to power vehicles and produce electricity, they are ultimately very hard on the planet, creating enormous amounts of carbon dioxide.

Definitions of fossil fuel
1

n fuel consisting of the remains of organisms preserved in rocks in the earth's crust with high carbon and hydrogen content

Types:
show 8 types...
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coal
fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period
gas, natural gas
a fossil fuel in the gaseous state; used for cooking and heating homes
crude, crude oil, fossil oil, oil, petroleum, rock oil
a dark oil consisting mainly of hydrocarbons
anthracite, anthracite coal, hard coal
a hard natural coal that burns slowly and gives intense heat
bituminous coal, soft coal
rich in tarry hydrocarbons; burns readily with a smoky yellow flame
brown coal, lignite, wood coal
intermediate between peat and bituminous coal
steam coal
coal suitable for use under steam boilers
resid, residual oil
oil products that remain after petroleum has been distilled
Type of:
fuel
a substance that can be consumed to produce energy

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