Fossil fuels Section 1.

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Presentation transcript:

Fossil fuels Section 1

A fuel is a substance that provides a form of energy. Fossil Fuels A fuel is a substance that provides a form of energy. Such as heat, light, electricity, or motion. As a result of a chemical change.

The process of burning a fuel is called combustion. Gasoline + Oxygen Carbon Dioxide + Water

Fossil Fuel

What are Fossil Fuels Fossil Fuels are the energy rich substances formed from the remains of once-living organisms. The three major fossil fuels are coal, oil and natural gas. Fossil fuels are made of hydrocarbons, they contain carbon and hydrogen's.

Coal

Coal Coal is a solid fossil fuel formed from plant remains. Known deposits of coal (and other fossil fuels) can be obtained using current technology are called reserves. Coal is the most plentiful fossil fuel in the U.S. Its easy to transport It provides lots of energy when burned.

Coal

OIL Oil is a thick, liquid fossil fuel, it is formed from remains of small animals, algae and protists. Petroleum is another name for oil. The United States consumes about one third of all the oil produced in the world. Only 3% of the world’s supply is located in this country.

Fossil Fuel Consumption

Refining Oil When oil is first pumped out of the ground, it is called crude oil. A factory where crude oil is separated into fuels and other products by heating is called a refinery.

Natural Gas The third major fossil fuel is natural gas. It is a mixture of methane and other gases. Advantages: Provides lots of energy Lower levels of air pollutants than coal and oil Its easy to transport. Disadvantage: Highly flammable

Comparison

Fuel Supply and Demand Fossil fuel takes hundreds of millions of years to form. Fossil fuels therefore are considered a nonrenewable resource. New resources of energy are needed to replace the decreasing fossil fuel reserves.