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1 | |
What feature do methane and carbon dioxide share that makes them both greenhouse gases? |
| | A) | They can both bend and stretch in response to infrared radiation. |
| | B) | Their covalent bonds are easily broken upon absorption of ultraviolet light. |
| | C) | They rotate upon absorption of visible light. |
| | D) | They act as catalysts when struck by microwaves. |
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2 | |
Consider this information about three greenhouse gases; these data are from the 2000 report from the United Nations Intergovernmental Panel on Climate Change:
From the pre-industrial era to the year 2000, the concentration of CO2 increased from 280 ppm to 370 ppm, the concentration of N2O increased from 0.28 ppm to 0.31 ppm, and the concentration of CH4 increased from 0.70 ppm to 1.8 ppm.
Starting with the gas that has shown the smallest percentage increase in concentration from pre-industrial times to 2000, arrange the three gases in order of their increasing percentage change in concentration. |
| | A) | CO2, CH4, N2O |
| | B) | N2O, CO2, CH4 |
| | C) | CO2, N2O, CH4 |
| | D) | N2O, CH4, CO2 |
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3 | |
One of the guiding principles of the 1997 Kyoto Conference agreements was that |
| | A) | all countries would be subject to the same percentage reduction in their emissions of greenhouse gases. |
| | B) | only the underdeveloped countries would be subject to a reduction in the emission of greenhouse gases. |
| | C) | the United States would be exempt from any mandated reductions in the emission of greenhouse gases. |
| | D) | the developed countries would have set goals for the percentage reduction of their emissions of greenhouse gases; these percentages were not meant to be the same. |
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4 | |
Oil of wintergreen is chemically C8H8O3. How many molecules are in 10.0 g of pure C8H8O3? (The molar mass of C8H8O3 is 152 g/mol.) |
| | A) | 9.2 x 1025 |
| | B) | 6.0 x 1024 |
| | C) | 4.0 x 1022 |
| | D) | 6.6 x 10-22 |
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5 | |
Which of these countries has the highest per capita CO2 emissions at this time? |
| | A) | Japan |
| | B) | Canada |
| | C) | China |
| | D) | United States |
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6 | |
Avogadro's number is 6.0 x 1023. If we have a sample that contains one mole of carbon dioxide, how many atoms of oxygen are contained in that sample? |
| | A) | 3.0 x 1023 |
| | B) | 6.0 x 1023 |
| | C) | 12 x 1023 |
| | D) | 1 x 1023 |
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7 | |
The greenhouse effect calls for climate modeling. Which of these components does not have an effect on climate modeling and predictions of global warming? |
| | A) | sunspots and solar flares |
| | B) | meteorological factors like wind and clouds |
| | C) | volcanoes and the dust that they generate |
| | D) | All of these do have an effect. |
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8 | |
What is the molar mass of the greenhouse gas CO2? |
| | A) | 14 g/mol |
| | B) | 28 g/mol |
| | C) | 38 g/mol |
| | D) | 44 g/mol |
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9 | |
Which process will help reduce CO2 levels in the atmosphere?
I. increase clear cutting of forests
II. car pooling rather than driving individual cars
III. using more renewable energy sources, such as wind or solar power
IV. generating more electricity with nuclear power |
| | A) | I, III, and IV only |
| | B) | I, II, and III only |
| | C) | II, III, and IV only |
| | D) | I, II, III, and IV |
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10 | |
The concentration of CO2 in the atmosphere |
| | A) | has remained constant for the past century. |
| | B) | is now approximately 370 ppm. |
| | C) | is double what it was before the Industrial Revolution began (about 1860). |
| | D) | plays no role in the average temperature of the Earth. |
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11 | |
What is the molar mass of the greenhouse gas CH4? |
| | A) | 7 g/mol |
| | B) | 10 g/mol |
| | C) | 13 g/mol |
| | D) | 16 g/mol |
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12 | |
What is happening in the "valleys" of this sketch of a spectrum of carbon dioxide?
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| | A) | The "valleys" are regions of strong absorption of radiation by carbon dioxide. |
| | B) | The "valleys" are regions of strong transmission of radiation by carbon dioxide. |
| | C) | The "valleys" are regions of high concentration of carbon dioxide caused by radiation. |
| | D) | The "valleys" are regions of low concentration of carbon dioxide caused by radiation. |
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