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Vocabulary Review

Across
A device with blades that are turned by wind, water, or steam.
Another name for oil.
Liquid that is often mixed with gasoline.
Requiring the absorption of heat.
Processes that form new substances through a chemical change.
Fuels that are not easily made.
Energy an object has due to its movement.
Accompanied by the release of heat.
A substance that is harmful to the environment.
Down
Energy that comes from heat.
Liquid made from petroleum that can be used for fuel.
Fuels that can be easily made.
Fuel that formed millions of years ago from dead animals and plants.
When a material is giving off harmful amounts of radiation.
Energy that is stored in the nucleus of an atom.
Energy that is stored and waiting to be used.
Gas used mostly for cooking and heat.
Any material that is living or was once alive.