<p>Unit 4 Part C – Fossil Fuels study questions</p><p>1. Explain the percentage use of different fuel sources in the world</p><p>2. What factors determine the selection of fuel type by a country</p><p>3. In the US what is the energy used for by percentage?</p><p>4. What type of resource are fossil fuels and based on their formation why are they classified that way?</p><p>Coal</p><p>5. Outline the different types of coal and the their composition and energy density.</p><p>6. How is coal mined?</p><p>7. Explain the regulation of coal mining including the legislations involved.</p><p>8. What are the environmental problems caused by burning coal</p><p>9. Why is coal used if it causes all of those problems?</p><p>10. How can combustion of coal be “cleaned”? Address the used of pretreating and also scrubbers</p><p>Oil & Natural Gas</p><p>11. Explain the refining process of crude oil</p><p>12. Where is oil and gas found geologically? Geographically?</p><p>13. Explain the idea of peak oil and how long oil will last.</p><p>14. List the environmental impacts of oil and gas. Include the impacts during extraction (drilling and fracking), transport, combustion and clean up.</p><p>15. Outline the case study of the Exxon Valdez oil tanker in Alaska</p><p>16. Outline the case study and argument about the keystone XL pipeline</p><p>Other</p><p>17. Explain the use of synfuels especially tar sands</p><p>18. List the 4 main objectives of the US energy strategy</p>