6246MS10_KEY

6246MS10_KEY - GLY 6246 Name KEY 72 points 6 TOOK EXAM...

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1 GLY 6246 Name KEY 72 points - 6 TOOK EXAM March 4, 2010 Number in red to the left of the question is the number of incorrect responses. FLORIDA ATLANTIC UNIVERSITY ADVANCED ENVIRONMENTAL GEOCHEMISTRY Midterm Examination True-False - Print the letter T or F in the blank to indicate if each of the following statements is true or false. Illegible answers are wrong. (1 point each) 0 T 1. The physical and chemical properties of water are anomalous with respect to almost all other known liquids, and the degree of this anomalous behavior is often large. 2 T 2. For salt water the coefficient of volume expansion is negative between the melting point and the point of maximum density, but both decrease as salinity increases. 0 F 3. * 18 O and * D are positive for ocean water, in principal. 1 T 4. For atmospheric waters whose source is evaporation from the ocean both * 18 O and * D are negative, with the degree of negativity varying as a function of latitude and distance from the ocean. 0 F 5. Absolute humidity is higher at the poles than at the equator. 0 T 6. In the atmosphere, nucleation on a foreign substance is a more important process than homogeneous nucleation. 1 T 7. The addition of soluble material to the atmosphere increases the number and the efficiency of cloud condensation nuclei. This, in turn, increases droplet concentrations of clouds formed in polluted regions. The clouds become brighter as the surface area of droplets increases. Brighter clouds will reflect more light, helping to cool the climate. 0 F 8. Most rainwater is pure, because it is the product of a natural distillation process, evaporation followed by condensation. 0 T 9. In one study in Sweden, rainfall was shown to be nearly twice as efficient at removing organic matter from the atmosphere as snowfall. 0 T 10. Some gases simply dissolve in air. Others not only dissolve but react with the water molecules to form new species.
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2 2 T 11. Sulfur emitted from volcanoes is usually in reduced form, such as hydrogen sulfide. 0 F 12. Nitrogen is more common in the marine environment than in the terrestrial environment. 0 T 13. Nitrogen fixation occurs both naturally and anthropogenically. 1 T 14. The use of manure, as opposed to inorganic fertilizer, has been shown to decrease the amount of nitrogen added to surface water, at the expense of increasing ammonia in the atmosphere. 2 F 15. Acid rain problems are confined to major industrial areas or the regions immediately downwind from these areas. Multiple-Choice - Choose the best response to each statement or question. Print the letter corresponding to your choice in the blank. (1 point each) 0 C 1. In which of the following parts of the earth is the greatest amount of water found? A. Circulating groundwater
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This note was uploaded on 12/13/2010 for the course GLY 4200c taught by Professor Warburton during the Spring '10 term at FAU.

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6246MS10_KEY - GLY 6246 Name KEY 72 points 6 TOOK EXAM...

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