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51 Cards in this Set
- Front
- Back
What are the major greenhouse gases?
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CH4, CO2, O3, H2O, N2O, CFCs
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What are the effects of the gases based on?
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Abundance of the gas and its ability to absorb heat
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Which greenhouse gas is most abundant?
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CO2
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Describe the Greenhouse Effect
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short UV rays are emitted by the sun these are absorbed or reflected by the greenhouse gases, long rays are more probably trapped--this results in an increase of temperature
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Which wavelength do incoming waves have?
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Short (UV)
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Wavelength of outgoing waves?
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Long (Infrared radiation)
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What have been some global effects of global warming?
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increase of temperatures, 1% increase of precipitation, 15-20 cm sea level rise,
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Which greenhouse gas is most effective at trapping heat?
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CFCs
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Sources of ozone?
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photochemical smog
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Sources of CFCs?
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spray cans, foam, solvents, refrigerators
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Effects of global warming on agriculture?
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effects on crops (positive or negative), distribution of crops
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Effects of global warming on water resources?
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decreased quality, floods more likely, droughts more severe
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Effects of global warming on species and natural areas?
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loss of cold water fish habitat, loss of species, desertification
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Effects of global warming on health?
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greater risk of diseases like malaria, because life cycles of pathogens and insects affected
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Effects of global warming on forests?
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summer droughts, more forest fires, possible faster growth due to increased precipitation
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Effects of global warming on coastal areas?
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Increased flooding, more erosion
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Carbon dioxide vs. Methane in effectiveness?
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CH4 30 Times as efficient,
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relative effectivnes of CO2
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1
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relative effectivness of methane
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30
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Carbon dioxide vs. N2O in effectiveness?
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160
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Carbon dioxide vs.O3 in effectiveness?
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2000
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Carbon Dioxide vs. CFCs in effectiveness?
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10000-25000 times
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O3 usefulness outside the troposphere
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Reflects UV rays
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Contribution of CO2 to global warming?
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50-60%
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Contribution of CH4 to global warming?
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15-18%
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wavelength of uv light
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short
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atmospheric lifespan of CO2
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200-500 years
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Contriubution of CH4 to global warming?
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15-18%
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Contribution of N2O to global warming?
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6%
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Contribution of O3 to global warming?
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12%
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Since when has global warming significantly increased?
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Industrial Revolution
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Contribution of CFCs to global warming?
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8-14%
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atmospheric lifespan of CFC's
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80 years
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atmospheric lifespan of CH4
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7-10 years
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atmospheric lifespan of N2O
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120-250 years
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What is the long bond in the Ozone Structure called?
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A dative bond
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What are CFCs found in?
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spray cans, old refrigerators, solvents
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Sources of CH4
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anaerobic decomposition of organic matter, ruminant animals, rice paddies and oil and gas fields
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Increase of concentration since industrial revolution. CO2, CH4, N2O
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CO2 up 25% CH4 up 145%, N2O up 15%
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Short wavelength sunlight has a .... frequency
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high
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Sources of H2O
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evaporation of water, hydrocarbon combustion
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Sources of CO2
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fossil fuel combustion, forest fires, decay
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Sources of N2O
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bacterial action, nitrogen-based fertilizers
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What effect does Global Warming have on Agriculture?
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crop yields will (not) thrieve, geographic distribution
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What is the evidence aquired that shows Global Warming?
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Surface and ocean temperatures increase.
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Sources of O3
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photochemical smog
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Effects of enhanced global warming
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increase in avarege temperature, 1% increase of percipitation and about 15-20 cm rise in sea levels
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Long wavelength sunlight has a .... frequency
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low
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What is the most common greenhouse gas?
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Watervapour, H2O (g)
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What does the layer of CO2 in the Green House effect do?
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Absorbs and traps heat
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The worldwide rise in sea level was
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15 - 20cm
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