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ENERGY RESOURCES

Across
Gases mix with air; LA
Can harm plants and fish
Moving electrons
Can get it back
Energy from falling water
Radiation from sun
Most energy alternatives are
Fuel made from corn
Splitting nuclei of atoms
Also called petroleum
Using less
Turns mechanical energy into electricity
Down
Made from ancient plants; a rock
Main polluting gas
Spins a generator
Ability to do work
Petroleum, coal, natural gas
Changes petroleum into gasoline, kerosene, etc.
Main problem with fossil fuels
Heat from deep inside earth
Also called crude oil
Wood, animal dung, etc
Some are natural
Use again
Falling water flows through it