The three major fossil fuels are coal, oil, and

_____________are what fossil fuels are made of: carbon and hydrogen atoms.

Fossil fuels are considered nonrenewable resources because they

Coal is a solid fossil fuel formed from

_______________is the most plentiful fossil fuel.

______________fossil fuel causes the most air pollution.

How does coal form from peat?

What is another name for oil?

Where are most oil deposits located?

_______________is a factory which crude oil is heated and separated into fuels.

________________is a fossil fuel that consists of a mixture of methane and other gases.

Which fossil fuel produces the largest amounts of energy?

______________has the lowest air pollution than coal or oil.

Which fossil fuel is the most flammable?

Which of the following is a nonrenewable energy source?

Which of the following is a renewable energy source?

Where does solar energy come from?

How is hydroelectric power produced?

_____________is an indirect form of solar energy.

_____________is the fastest growing energy source in the world.

_____________is made of living things (for example, leaves, food wastes, manure, wood)

____________is a renewable source of energy but is not widely used in the United States today.