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fossil fuels

made from living matter millions of years old

renewable energy

anything capable of producing energy and can be used over and over again. ex sunlight and wind power.

non renewable energy

when you use up this kind of energy, it's gone for good

fractional distillation

heating petroleum separate the parts, like gasoline and asphalt


the percentage of energy that is actually used to perform work

nuclear energy

energy obtained from nuclear reactions


the splitting of uranium atoms


relating to or associated with heat

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