Earth Resources

Steven Dutch, Natural and Applied Sciences,University of Wisconsin - Green Bay
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1. Most of the world's oil is in:
   1. a relatively small number of large oil fields
   2. thousands of small oil fields
2. The ancestral material of coal:
   1. woody material
   2. vertebrate fossils
   3. marine plankton
   4. carbonate rocks
3. Geothermal energy is commonly affected by all of the following problems except:
   1. low efficiency
   2. mineral deposits clogging pipes
   3. depletion of steam
   4. corrosion
   5. excessively high temperatures
4. After ore is blasted loose, the next step in extracting metal is:
   1. milling
   2. smelting
   3. flotation
   4. crushing
   5. tailings disposal
5. The molten silicate residue that floats to the top during ore smelting:
   1. tailings
   2. slag
   3. gangue
   4. none of the above
6. Mineral deposits where heavy minerals are concentrated by stream or wave action are called:
   1. hydrothermal
   2. hydraulic
   3. stratiform
   4. placer
   5. residual
7. The most abundant metal in the crust:
   1. iron
   2. copper
   3. nickel
   4. aluminum
   5. titanium
8. Which is not a major type of ore-forming environment?
   1. magmatic
   2. hydrothermal
   3. sedimentary
   4. placer
   5. metamorphic
9. The parent material of petroleum:
   1. woody material
   2. vertebrate fossils
   3. marine plankton
   4. carbonate rocks
10. Secondary enrichment makes low-grade ores into richer ores by:
    1. weathering
    2. metamorphism
    3. deformation
    4. igneous activity
    5. evaporation

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    Created 3 May 1999, Last Update 24 Feb 2011

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