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14 Cards in this Set
- Front
- Back
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Early atmosphere compared to the modern atmosphere |
The early atmosphere was mainly carbon dioxide with little or no oxygen and small amounts of other gases The modern atmosphere has 78% nitrogen, 21% oxygen 0.035% carbon dioxide. The rest are water vapour, methane and trace gases |
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what are the reasons for the changes from the early atmosphere to the modern atmosphere? |
Carbon dioxide. Ocean dissolved carbon dioxide, primitive plant life used it for photosynthesis and marine life used to come dioxide to make shells out of calcium carbonate. Oxygen. The primitive plant life released oxygen via photosynthesis. Nitrogen. Nitrogen was probably released by volcanoes and it gradually build up in the atmosphere as it is unreactive. Dihydrogen monoxide. Volcanic activity released water vapour, which condensed as the Earth formed oceans |
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Name, three greenhouse gases |
water vapour, methane and carbon dioxide |
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how do greenhouse gases cause an increase in the earths temperature? |
Greenhouse gases such as carbon dioxide and water vapour warm up the Earth by trapping the suns infrared radiation |
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What is the definition of a carbon footprint? |
carbon footprint is the total amount of CO2 or other greenhouse gas released into the atmosphere by a product person or thing |
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Name, three atmospheric pollutants |
Carbon dioxide, carbon monoxide, sulphur dioxide in addition to particulates, e.g. nitric oxides and carbon particulates |
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How is carbon monoxide released into the atmosphere? |
Carbon monoxide is released into the atmosphere via incomplete combustion |
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how is carbon dioxide released into the atmosphere? |
carbon dioxide is released into the atmosphere via the complete combustion of fossil fuels |
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how is sulphur dioxide released into the atmosphere? |
Sofa dioxide is released into the atmosphere when power stations burn fossil fuels containing sulphur |
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What are the effects of carbon dioxide? |
Carbon dioxide is a greenhouse gas and therefore warms up the Earth |
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What are the effects of carbon monoxide? |
Carbon monoxide decreases the ability of the blood to carry oxygen, leading to a quick death |
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what are the effects of sulphur dioxide? |
Sulphur dioxide is an acid gas that can combine with water to make acid rain. This will cause breathing problems |
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what are the effects of nitric oxides? |
Nitric oxides cause smog and acid rain |
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What are the effects of carbon particulates? |
Carbon particulates can get into the lungs and cause breathing problems and can also make surfaces look dirty |
