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Fossil FuelsUnderstanding Main IdeasAnswer the following questions on a separate sheet of paper.
1. What energy conversions occur when a car engine burns gasoline?
2. What are the three major types of fossil fuels? How do fossil fuels form?
The circle graphs above show how oil and coal are used as sources of energy in the United States. Use the graphs to answer the following questions.
3. What is oil mainly used for?
4. What is most of the coal used for?
5. What percentage of the coal mined in the United States is exported to other countries?
Building VocabularyDefine each term in your own words on a separate sheet of paper.
6. fuel
7. hydrocarbons
8. refinery
9. petrochemicals
Industry8%
Heating1%
Coal used tomake steel
7%
Exports13%
Electric power71%
Coal Use in the United StatesOil Use in the United States
Transportation61%
Industry26%
Electric power5%
Residential andcommercial power
8%
Energy Resources ■ Review and Reinforce