C11 - Earth's Atmosphere 0.0 / 5 ? ChemistryCooking and food additivesGCSEAQA Created by: ethannnnnnnnnCreated on: 08-01-18 19:50 C11 - Earth's Atmosphere C11 - Earth's Atmosphere... 1 of 8 Earth's Atmosphere... Early Atmosphere: water vapour cooled and condensed - forming oceans. Carbon dioxide and methane - Volcanoes Amonia Water Vapour - 74% Carbon dioxide - 12% Nitrogen - 5% Other - 9% 2 of 8 Earth's Atmosphere... Volcanoes released methane, CO2, Nitrogen - created atmosphere. No oxygen at this time Ocean formed as water vapour condensed when the Earth cooled. Would have remained stable if no living things came along.... 3 of 8 How the Atmosphere changed.... increase in oxygen and decrease in CO2 (Photosynthesis) Life started - bacteria and they used chemicals as energy. Photosynthesis: Bacteria, algae and plants produced oxygen in atmosphere. oxygen poisened poisend things that weren't used to it. 4 of 8 Locked up carbon... CO2 dissolves in Oceans CO2 absorbed by plants - organic matter Dead organic matter - heated and crushed into rock and fossil fuels. Bye Methane! - Oxygen took it over. 5 of 8 Atmosphere Today... CO2 increasing - burning fossil fuels Methane increase - agricultre, landfil. Water - clouds trap heat Human demand 6 of 8 Atmospheric polloution Sulfur dioxide - Asthma, inflames airways of lungs. Carbon menoxide - Starved of oxygen, drowsy, dizzy, loose conciousness, sticks to red blood cells. Nitrogen oxide - Astmha, acid rain. Particulates - Damage lung cells, causes cancer. 7 of 8 Atmospheric polloution 8 of 8
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