Energy Conversions and Nonrenewable Energy Sources

Front

What is coal?

Back

A hard, black substance made from plant stems and leaves.

Front

How can some devices get electrical energy?

Back

They plug into wall outlets.

Front

What is a turbine?

Back

A device that spins as gas flows and changes heat energy of steam into energy of motion.

Front

Where is petroleum formed?

Back

From some dead organisms under the sea.

Front

What happens at the cooling tower in a power plant?

Back

Steam becomes liquid water again.

Front

What is energy conversion?

Back

The process of changing energy from one form to another.

Front

What are nonrenewable energy sources?

Back

Energy sources that cannot be replenished in a short period, like coal, oil, and natural gas.

Front

What is natural gas?

Back

A fossil fuel that is a gas at room temperature, used for heating and electricity.

Front

What is petroleum?

Back

A liquid fossil fuel formed from ancient marine organisms, used for fuel and making products.

Front

What is combustion?

Back

A chemical process where a substance reacts with oxygen to produce heat and light.