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You are here:  World Info » Science and Engineering » Energy
Coal, pictured here, is a particularly dirty fossil fuel. [©Shutterstock, 2010]

Science and Engineering » Energy

Why are coal, oil and natural gas called fossil fuels?

Learn why coal, oil and natural gas are called fossil fuels.
Coal, oil and natural gas are called fossil fuels for a specific reason. Find out why coal, oil and natural gas are called fossil fuels.

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A cord is fairly large amount of wood. [©Shutterstock, 2010]

Science and Engineering » Energy

How much wood is in a cord?

Find out how much wood is in a cord and what its dimensions are.

Canaries can detect toxins in the air. [©Shutterstock, 2010]

Science and Engineering » Energy

What is a miner's canary?

Learn what a miner's canary is and how it helps miners.

Hydrocarbon cracking helps create gasoline from petroleum. [©Shutterstock, 2010]

Science and Engineering » Energy

What is the process known as hydrocarbon cracking?

Discover what hydrocarbon cracking is and why its useful in gasoline.

Oil barrells lined up for use. [©Jupiter Images, 2009]

Science and Engineering » Energy

How many gallons are in a barrel of oil?

Discover how many gallons are in a barrel of oil.

Pennsylvania crude oile is waxy and sweet-smelling. [©Jupiter Images, 2009]

Science and Engineering » Energy

Why is Pennsylvania crude oil so highly valued?

Find out why Pennsylvania crude oil so is highly valued.

Different electrical appliances require different amounts of energy. [©Jupiter Images, 2010]

Science and Engineering » Energy

How much energy is required to use various electrical appliances?

Learn how much energy is required for various electrical appliances.

In nuclear fuels, one quad is equivalent to 2,500 tons of U3O8 if only U235 is used. [©Jupiter Images, 2010]

Science and Engineering » Energy

What are the fuel equivalents to produce one quad of energy?

Find out the fuel equivalents to produce one quad of energy.

A cooling degree day is a unit that helps estimate energy needed to cool a building. [©Jupiter Images, 2010]

Science and Engineering » Energy

What does the term cooling degree day mean?

Find out what the term cooling degree day means.

Heating degree days are an index of heating fuel requirements. [©Jupiter Images, 2010]

Science and Engineering » Energy

How is a heating degree day defined?

Learn how a heating degree day is defined.

It can be more economical to run an automobile with its windows open rather than using its air conditioner. [©Jupiter Images, 2010]

Science and Engineering » Energy

Is it more economical to run an automobile with its windows open rather than using its air conditioner?

Learn when to run a car with open windows instead of air conditioners.

You are here:  World Info » Science and Engineering » Energy
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