| Work Sheet Lesson 2 Geothermal energy is generated by using steam and hot water from the interior of the earth. The heated water can emerge as steam, as a mixture of steam and water, or as hot water only. Each type of geothermal source presents different challenges for economical and environmentally safe development. 1. It is estimated that the geothermal reserves in the United States could supply about 5% of current energy demands, if these reserves were developed. Under what conditions would people use geothermal energy, rather than energy from oil, natural gas, nuclear plants, or some other source? 2. Geothermal electrical plants need a source of cool water to condense the steam. How would this affect the location of a geothermal energy plant? 3. When a geothermal field releases a mixture of steam and water, the mixture cannot be used directly for generating electricity. A centrifugal separator must be used to separate the mixture into dry steam and hot water containing dissolved salts. The steam is used to turn a turbine; the hot water must be disposed of. Why would it not be a good idea to release the hot water into a nearby body of water? 4. Old Faithful in Yellowstone National Park is the best-known example of a geyser in the United States. How might Old Faithful be used as a source of geothermal energy? 5. Yellowstone National Park is home to wildlife such as grizzly bear, elk, trumpeter swan, and Canada goose. How might developing geothermal energy in or around Yellowstone National Park affect this wildlife? 6. Geothermal resources can be used for heating as well as for the generation of electricity. Give at least one reason why it might be better to use geothermal energy for heating homes and factories than to use oil. 7. Geothermal resources can be used for heating as well as for the generation of electricity. Give at least one reason why it might be better to use geothermal energy for heating homes and factories than to use oil. 8. Do you think it is a good idea to look for new sources of geothermal energy? Or, should the money be spent on development other energy sources? Give reasons for your answer. |
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| Please print out this form answer the questions from your interactive learning sites designed for you in lesson two. Return to your instructor on Saturday January 20, 2001. |
| Understanding Vocabulary Define each term and then explain the relationship between each pair of terms. Write your responses on a separate sheet of paper. 1. fossil fuel, nonrenewable resource 2. petroleum, fractionation tower 3. solar energy, passive solar heating system 4. wind energy, wind turbine 5. fission, nuclear energy Understanding Concepts In the space to the left, write the letter of the choice that best completes the statement. _____ 6. The energy source most often used for electrical energy plants is a. natural gas. b. wind. c. coal. d. nuclear. _____ 7. The fuel that is relatively easy to collect from the earth is a. natural gas. b. coal. c. crude oil. d. uranium. _____ 8. An energy resource that is renewable is a. water. b. natural gas. c. coal. d. gasoline. ____ 9. An energy resource that is nonrenewable is a. geothermal energy. b. petroleum. c. wind. d. solar energy. ____ 10. The energy source that also provides us with products such as gasoline and asphalt is a. coal. b. petroleum. c. natural gas. d. methane. ____ 11. Currently, solar energy is used by people mostly to a. power cars. b. direct wind energy. c. heat homes. d. drive hydroelectric generators. ____ 12. Which term does not relate to geothermal energy? a. turbine generator b. reclamation c. steam d. hot spots |