Renewable and Inexhaustible Energy Sources 119
5. This fuel is a hydrocarbon fuel, but it is not a fossil fuel.
A. Natural gas.
B. Oil.
C. Alcohol.
D. Coal.
6. What is an advantage of using more alcohol in a gasoline mixture?
7. _____ and _____ are two types of alcohol fuels that could serve as substitutes for
gasoline.
8. True or False? Biomass fuels can be made from industrial, societal, and agricultural
waste.
9. _____ refers to the decomposition of material without the use of oxygen.
10. True or False? As a means of power generation and trash reduction, some munici-
palities have constructed waste-to-energy plants to burn garbage.
11. State the difference between renewable and inexhaustible energy sources.
For Questions 12 through 21, label each source of energy as nonrenewable (N), renewable (R), or
inexhaustible (I).
12. Alcohol. _____
13. Animals. _____
14. Coal. _____
15. Hydrogen. _____
16. Natural gas. _____
17. Oil. _____
18. Sun. _____
19. Water. _____
20. Wind. _____
21. Wood. _____
22. True or False? Waterwheels once provided significant mechanical power for some
industrial processes.
23. What is hydroelectric energy?
24. True or False? Large-scale hydroelectric power generation growth is predicted to
increase in the next 25 years.
25. Hydroelectric dams do not produce fossil fuel pollutants. They are most closely
associated with:
A. noise pollution.
B. low-level radioactive waste.
C. water pollution.
D. ecological damage.