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Complete the puzzle.
The chemical energy in fossil fuels is released by ____ the fossil fuels.
A type of fossil fuel that is the main source of energy for transportation.
The most powerful type of energy that can be produced by changing nuclei instead of atoms through either fission or fusion.
____ bulbs are more efficient than normal light bulbs.
A type of energy resource that is generated when water turns a turbine through pipes in a dam.
Fossil fuels are formed from the remains of ____ and microorganisms that were buried millions of years ago.
Fossil fuels are ____ resources because they can only be used once.
An electric ____ converts mechanical energy into electrical energy.
Normal light bulbs give off much more ____ than fluorescent light bulbs.
Hydroelectric power plants use falling water to spin these.
Related or derived from living organisms such as plants and animals.
A type of fuel formed from the remains of plants or sea creatures millions of years ago.
A type of energy, such as solar energy or wind energy, that can be used over and over.
The direct conversion from sunlight into electricity can be accomplished by ____ panels.
A type of fossil fuel that mostly consists of methane. (2 words)
Agricultural waste products that can be used as a source of fuel.
A type of energy that can be produced when heat from inside of the earth is used.
____ energy is produced when air moves large turbines that generate electricity.
The ____ energy of water in a dam is increased by raising the level of water behind the dam.
A type of fossil fuel that is in the form of a soft rock and easily burns.