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AirQuality 2
Quiz 2
| Question | Answer |
|---|---|
| Why is stratospheric ozone important? | Protects against UV B radiation. Stops skin cancer Protects phytoplankton Minimizes surface adsorption |
| Summarize the ozone production cycle. | Elemental O + O2 =O3 O3 + heat=O2D O2D +N2O= NO |
| Summarize the Rowland Molina Theory. | CFCs + heat produce radicals. Radicals react with ozone |
| Why were CFCs considered a miracle solvent? | Low human toxicity; low reactivity; non flammable; high thermal absorption; useful |
| How much ozone can one radical react with? | 100 000 |
| How did the ozone hole work? | ClO formed from radicals and ozone would turn to HOCl. This would accumulate in winter, but would be released with the sun |
| What are some impacts of UVB | Sun burn, cataracts, and cancers (basal cell, squamosal, melanoma) |
| Compare the Montreal protocol to the Kyoto accord. | Although both focused on developed countries, the Montreal protocol phased out CFCs, which had a replacement. Fossil fuels have no replacement which makes Kyoto a fail |
| Why didn't carbon dioxide used to be considered a pollutant? | It is required for life |
| Are there more natural or anthropogenic sources of carbon dioxide? | More natural sources |
| Major sink of carbon dioxide | Photosynthesis |
| Minor sink of carbon dioxide | oceanic deposition |
| Summarize the greenhouse effect | increased gases lead to higher infrared absorption and global warming |
| Which has the highest global warming potential: carbon dioxide or methane? | Methane |
| What natural things may influence global warming? | the rotation/orbit of the earth by affecting energy distribution solar radiation flares |
| Two periods of major climate change | World wars and development |
| Why is carbon dioxide lower in summer? | Summer has vegetation, which absorbs carbon dioxide |
| Reasons for Kyoto accord failure | Fossil fuels have no replacement Developing nations not taken into account More production No commitment |
| Summarize the Paris agreement. | Global temperatures cannot exceep more than 2 degrees over pre industry conditions; carbon neutral by 2050; individual targets; developing countries into account; emission trade |
| Things AB is doing to combat climate change | Carbon dioxide surcharge Coal phase out Hard cap the oil sands Decrease methane production Carbon tax |
| What is an atmospheric window? | Certain wavelengths of infrared escape into outer space from earth |
| How does albedo affect global warming? | overall, albedo helps to cool the earth by reflecting UV back to space |
| The type of light responsible for the greenhouse effect | Infrared |
Created by:
swilson67
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