CH 5.6: Present & Future Energy Sources

CH 5.6: Present & Future Energy Sources
Read pages 325-331 and answer the following questions:
Multiple Choice
1. Which of the following statements best describes conventional fuels?
a. They are all fossil fuels.
b. They are commonly used today.
c. They are all renewable.
d. They have little environmental impact.
2. Which statement about coal is not true?
a. It is formed from decaying plant matter that c. It is a renewable fuel.
has been buried for millions of years.
b. It is used primarily to produce electricity in d. It can be lignite, bituminous, or anthracite.
3. Which of the following statements about nuclear energy is true?
a. It involves the release of large quantities of c. It has little environmental impact.
greenhouse gases.
b. It is powered by a very limited resource. d. It is powered by an inexpensive fuel.
4. Biofuels are one of the alternative energy sources that are being explored to replace fossil fuels. What is the one
of the major advantages of using biofuels to fuel our vehicles as compared to other alternative energy sources?
a. They are renewable, since they are
produced from living plants.
b. No modification needs to be made to
typical internal combustion engine.
c. Few greenhouse gases are produced.
d. all of the above
5. What is “cracking” and what is its importance to society?
a. Cracking is the process of seperating larger hydrocarbons from smaller hydrocarbons. It is
done in order to develop different types of hydrocarbon fuels.
b. Cracking is the process of obtaining biofuels such as ethanol from biomass. It is done to
provide a supplement/replacement for gasoline.
c. Cracking is the process used to mine uranium-235. It is done in order to help supply an
additional source of energy for electricity production.
d. Cracking is the process of converting long-chain hydrocarbons into short-chain
hydrocarbons. It is done to help meet the world’s growing demand for gasoline.
e. none of the above
6. Why is the use of wind technology to generate electricity increasing?
a. Wind turbines require large tracts of land. c. It is a quiet, environmentally friendly,
method of generating electricity.
b. There have been many advances in
d. Wind turbines generate far more electricity
technology that have greatly improved the
than a hydroelectric generating plant.
efficiency of wind turbines.
Indicate whether the statement is true or false.
7. Coal, gasoline, and uranium are all examples of fossil fuels.
8. Coal slurry is a suspension of pulverized coal in water.
9. The efficiency of a system is the ratio of useful energy produced to the total amount of energy wasted.
Complete each statement.
10. ______________ is a thick, dark liquid that is a mixture of hydrocarbons.
11. Refining petroleum is achieved by ___________, a process that takes advantage of differences in boiling points
among the different hydrocarbons.
12. _____________ is a synthetic fuel produced from the gasification of coal.
Match the descriptions with the type of fuel. Not all options will be used.
fossil fuel
natural gas
carbon dioxide
____ 13. the most widely used type of fuel today
____ 14. renewable resources produced from living things
____ 15. when combusted a large amount of energy is released, but it is difficult to transport and store
____ 16. a nuclear reaction in which an atom with a large mass splits into two or more atoms of smaller mass
____ 17. used to make syngas