QUESTIONS: 1. What are fossil fuels important? 2. Distinguish between reserves and resources. 3. What are the advantages of surface mining of coal compared to underground mining? What are the disadvantages of surface mining? 4. Compared the enviromental impacts of the use of coal and the use of oil. 5. What are some limiting factors in the development of new hydroelectric generating sites? 6. What factors limit the development of tidal power as a source of electricity? 7. In what parts of the world is geotermal energy available? What creats it? 8. Why can wind be considerd a form of solar energy? 9. Compared a passive sola-heating system with an active sola heating system. 10. What problems are associated with the use of solid waste as a source of energy? 11. List three energy conservation techniques.