Cumulative global warming exam version C 1. It is expected that carbon emissions will begin to diminish in the 21st century as fossil fuel reserves begin to dwindle. a) true b) false 2. While computer modeling indicate that the warming since 1970 is dominated by man-made greenhouse gas emissions, they are unable to conclusively ascertain whether the warming from 1910 to 1945 was anthropogenic. a) true b) false 3. Compared with the first half of the twentieth century, the rate of earth's average temperature rise during the second (latter) half was a) half as much b) about the same c) twice as much 4. No direct method exists that permits an independent measurement of the heat content of the oceans, other than the fact that the air is warming a) true b) false 5. Stefan-Boltzmann radiation is called a negative feedback mechanism because if the sun's radiation increases, the Stefan-Boltzmann law ensures that more heat is lost from the planet to compensate. a) true b) false 6. Changes in ice-albedo refers to changes in a) how much the Earth's surface absorbs or reflects incoming sunlight b) how much CO2 is absorbed by the sun c) how much ice is melted during the summer months 7. Stefan-Boltzmann radiation is called a negative feedback mechanism because if the sun's radiation increases, the Stefan-Boltzmann law ensures that this heat is retained by the planet. a) true b) false 8. Which external force plays the smallest role in current efforts to model global warming? a) solar luminosity (i.e. variations in energy from the sun) b) greenhouse gasses c) orbital cycles d) volcanic eruptions 9. The shows that carbon dioxide concentrations a) show a steady rise in CO2 levels, at constant slope, and irregular fluctuations due associated with El Ninos and La Ninas. b) show a steady rise in CO2 levels, with increasing slope, and regular and predictable annual fluctuations
Cumulative global warming exam version C 1. It is expected that carbon emissions will begin to diminish in the 21st century as fossil fuel reserves begin to dwindle. a) true b) false 2. While computer modeling indicate that the warming since 1970 is dominated by man-made greenhouse gas emissions, they are unable to conclusively ascertain whether the warming from 1910 to 1945 was anthropogenic. a) true b) false 3. Compared with the first half of the twentieth century, the rate of earth's average temperature rise during the second (latter) half was a) half as much b) about the same c) twice as much 4. No direct method exists that permits an independent measurement of the heat content of the oceans, other than the fact that the air is warming a) true b) false 5. Stefan-Boltzmann radiation is called a negative feedback mechanism because if the sun's radiation increases, the Stefan-Boltzmann law ensures that more heat is lost from the planet to compensate. a) true b) false 6. Changes in ice-albedo refers to changes in a) how much the Earth's surface absorbs or reflects incoming sunlight b) how much CO2 is absorbed by the sun c) how much ice is melted during the summer months 7. Stefan-Boltzmann radiation is called a negative feedback mechanism because if the sun's radiation increases, the Stefan-Boltzmann law ensures that this heat is retained by the planet. a) true b) false 8. Which external force plays the smallest role in current efforts to model global warming? a) solar luminosity (i.e. variations in energy from the sun) b) greenhouse gasses c) orbital cycles d) volcanic eruptions 9. The shows that carbon dioxide concentrations a) show a steady rise in CO2 levels, at constant slope, and irregular fluctuations due associated with El Ninos and La Ninas. b) show a steady rise in CO2 levels, with increasing slope, and regular and predictable annual fluctuations
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