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NS140 Chapter 5
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| Question | Answer |
|---|---|
| Hydrothermal water mainly comes from which if the following sources? | granitic magma, groundwater, and oceans |
| Gold makes up 0.0000002 percent of the crust. What minimum enrichment factor is needed for a gold deposit to be economically viable for mining at 0.0008 percent? | 4,000 |
| Which group of nations have supplied most of the mineral resources used by modern societies? | United States, Russia, South Africa, Canada, and Australia |
| If a mining company has mined on pastureland, what would The Surface Mining Control and Reclamation Act of 1977 require them to do? | eventually restore mined land so that it can be used as pastureland |
| The grade of coal and the heat that can be recovered by burning coal vary considerably depending on which of the following? | carbon content |
| In deep deposits, petroleum is formed when its component organic molecules are produced by the chemical breakdown of which substance? | kerogen |
| How is water used in the hydraulic fracturing method of petroleum and gas extraction? | Water pressure fractures the source rock, and sand is forced into the newly created fractures. |
| Which of the following environmental concerns associated with the refinement process has driven the controversy surrounding the development of the Alberta tar sands? | the use of very large volumes of water, which is then expensive to clean |
| Which of the following lists correctly identifies the major factors contributing to the decline of the nuclear power industry in the United States? | cost, safety concerns by local residents, waste disposal, and lower-than-expected demand |
| Most of the world's supply of iron is mined from sedimentary rocks known as | banded iron formations |
| In which three ways do current technologies allow us to use solar energy? | passive solar heating, active solar heating, and electricity production by solar cells |
| What are the three major categories of energy use in the United States? | buildings, industry, and transportation |
| Which explanation correctly describes why geothermal energy has a relatively high capacity factor relative to other renewable resources? | Geothermal energy can be used 24 hours a day, 7 days a week. |
| A sugarcane farmer is considering using crop refuse—called "trash"—as a biomass fuel. What is the farmer's most likely concern? | the amount of energy required to produce and process the sugarcane trash into fuel |
| A student chooses to write a report comparing two industries, iron production and wind energy generation. Assess the following statements. Which best describes a likely comparison the student could make? | Only wind energy production involves a renewable resource. |
| Scientists exploring minerals in a particular environment believe them to be precipitates. Which of the following sites is most likely to be the location of their investigations? | desert area overlying the site of an ancient sea |
| Which property must a mineral have for it to be found in a placer deposit? | density greater than that of surrounding sediment |
| Which of the following statements correctly compares mineral reserves and mineral resources? | The quantity of a mineral's resources is often greater than the quantity of that mineral's reserves |
| What key consideration is missing if a community group explores renewable energy by investigating resource availability, environmental hazards, and launch costs? | the financial and environmental costs of transmitting the generated electricity |
| A conference workshop explores and categorizes hypothetical strategies for conserving minerals. Which of the following should be considered a viable social solution? | using electronics for longer periods of time before replacing them |
Created by:
robynlee
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