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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Early atmosphere |
Volcanoes emitted CO2, methane, water vapour, nitrogen, ammonia Atmosphere was mostly CO2 with virtually no oxygen |
Billions of years ago |
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Changes in early atmosphere |
CO2 dissolved in seas and through a series of reactions formed the sea bed Green plants and algae evolved - absorbed CO2 and emitted O2 Marine animals evolved - skeleton made of carbonated - and then because fossils |
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Fossilisation |
Plants and marine animals die • fall to sea bed and get buried by layers of sediment • compress (heat and pressure) and form sedimentary rocks • therefore trapping carbon within them reducing CO2 in atmosphere |
Crude oil & natural gas = plankton Coal = plant deposits Limestone = shells and skeletons of marine animals |
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Current atmospherehu |
78% nitrogen, 21% oxygen, 0.04% CO2 and very small amount of water vapour and noble gases |
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Human activity that affect amount of GHGs in atmosphere |
Deforestation, Burning fossil fuels, Agriculture, Making waste |
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Carbon footprint |
Measure of the amount of carbon dioxide and other greenhouse gases released over the full life cycle of something |
Really hard to measure tbh |
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Reducing carbon footprint |
Renewable & Nuclear energy • more efficient processes cut out waste • government tax for CO2 emitted • government cap in emissions • carbon capture tech |
Hard to make tech that reduces CO2 emissions • governments don’t want to mess up economic growth • international agreements are harddd • individuals don’t want to change life lifestyles |
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Particulates and Air Pollution |
If inhaled, can get stuck in lungs and cause damage Bad for environment, reflect sunlight back into space, global dimming |
From incomplete combustion |
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Carbon Monoxide and Air Pollution |
Odourless, colourless has Bond to haemoglobin and prevents oxygen from bonding - no oxygen isn’t great ngl |
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Sulphur Dioxide and Oxides of Nitrogen |
SD- releases during combustion of fossils f with sulphur impurities and it becomes oxidised NO- caused by heat of burning (e.g in cars) nitrogen oxidises Creates acid rain, kills plants, damaged buildings, metal corrosion, respiratory problems |
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