Environmental Science - Sample Midterm Exam | BSCI 205, Exams of Biology

Download Environmental Science - Sample Midterm Exam | BSCI 205 and more Exams Biology in PDF only on Docsity! Name: Environmental Science P.M. Koines, Instructor SS #: _ 21 October 1998 Section #T.A. Name: L MULTIPLE CHOICE. Choose the best, most complete answer for each of the followng questions. Indicate your answer using CAPITAL LETTERS in the space provided to the left of the question. (2 points each). __ 1. Pollution: a. Increases the complexity of ecosystems b. Makes food chains more complex c. Both A and B d. None of the above _2. Malaria and schistosomiasis have increased in areas where ? has (have) also increased: a. Deep injection wells b. Reservoirs and irrigation canals c. Air pollution d. Salinization of soil e. Desalinization of water _3. Dividing the percentage rate of increase of a population into 70 tells the: a. Population increase over the next 70 years b. Population decline over the next 70 years c. Doubling time of population d. None of the above _4. The ozone layer in the stratosphere absorbs: a. Gamma rays b. Visible radiation c. Infrared radiation d. Ultraviolet radiation 5. A sink for carbon dioxide: a. Animals b. Plants c. Coal-fired power plants d. Both and A and B Name: _____________________ 11. Heterotrophs are never a. Consumers b. Producers c. Fungi or bacteria d. Decomposers e. Parasites 12. Stage in hydrological cycle in which the greatest purification of water occurs: a. Condensation b. Precipitation c. Infiltration d. Run-off e. Evaporation 13. If gasoline with the energy equivalent of 100 calories was put in a car, this would allow the car to have how many calories worth of kinetic energy? a. Less than 100 calories b. One hundred calories c. More than 100 calories 14. Global warming could cause a decrease in the solubility ofCOi in water. This is an example of: a. Beneficial positive feedback b. Harmful positive feedback c. Beneficial negative feedback d. Harmful negative feedback e. Environmental equilibrium 15. Modern agriculture is based on deliberately keeping ecosystems in: a. Late stage of succession b. Early stage of succession c. Climax vegetation d. Both a and c 16. An acidic solution is one with a pH of: a. 10 or more b. exactly 10 c. 7 to 10 d. less than 7 Name: _____________________ ( 3 ) 7. In this area, when we measure COj levels in the atmosphere over a period of a year, we consistantly find higher levels during the winter. Why? (3 ) 8. _________________ is the cheapest, easiest and quickest way to extend our limited natural resources. ( 4) 9. Traditionally, conservationists advocated the planned management of our resources, whereas preservationists argued that our resources should remain untouched. However, today we may not be able to make this distinction. Why? ( 3 ) 10. Give an example of a non-renewable resource that can be recycled: (4 ) 11. The developed countries of the world account for _____ % of the world's population and use ____ % of the world's resources. (3) 12. The U.S. has a total fertility rate of 1.8. Based on this figure alone., would you expect our population to increase or decrease? Why ? (4) 13. In what ways might the destruction of vast areas of tropical rainforests contribute to increasing global temperatures from the greenhouse effect? 7. Waters high in organic wastes have a: a. LowpH b. HighpH c. Low BOD d. High BOD 8. Carbon enters the atmosphere: a. Primarily as a byproduct of photosynthesis b. As a byproduct of respiration and bacterial decomposition c. When plant materials are burned d. Through combustion of fossil fuels e. A, Band C f. B, CandD 9. Global warming would cause a decrease in the solubility of COa in the oceans. This is an example of: a. Beneficial positive feedback b. Harmful positive feedback c. Beneficial negative feedback d. Harmful negative feedback e. Thermal equilibrium 1 0. Each time we burn a ton of coal we are adding _ ? __ of CO2 to the atmosphere. a. 1 ton b. 2 tons c. 3 tons d. Less than one ton 1 1 . In this area when we measure CO2 levels in the atmosphere over a period of a year, we consistently find higher levels during the winter. This is due to: a. Increased rates of respiration b. Increased rai:es of photosynthesis c. Decreased rates of respiration d. Decreased rates of photosynthesis e. None of the above because statement is not correct 12. If gasoline with the energy equivalent of 100 calories was put in a car, this would allow the car to have how many calories worth of kinetic energy? a. Less than 100 calories b One hundred calories c. More than 100 calories 13. The major cause of eutrophication is inputs of a. too many nutrients b. toxic chemic;ils c. too much carbon dioxide d. all the above e. none of the above II. (5) 15. The amount of non-fuel minerals consumed from 1950-2000: a. Is so great that prices have increased b. Indicates a shortage will occur by 2050 c. Exceeds the sum total extracted from the earth through all preceding human history d. Has decreased due to technological improvements e. Both A and B 14. Modem agriculture is based on deliberately keeping ecosystems in: a. Late stage of succession b. Early stage of succession c. Climax vegetation d. Both A and C Fill in, Matching, etc., (points as noted) 1. Water in aquifer 2. This waner may be lost by evaporation 3. Top of an aquifer 4. This water is available to plants 5. Water above the water table a. Soil water b. Water table c. Ground water (3) 6. The pH scale which is used to measure the acidity of a solution is logarithmic. Therefore, rain with a pH of 4 is _______ times more acidic than rain with a pH of 5, _________ more acidic than rain with a pH of 6, and of 7. times more acidic than rain with a pH (4) 7. Today there are approximately people on the earth, and based on current rates of population growth the human population will double in approximately years.