The atmosphere, climate and greenhouse gases 0.0 / 5 ? ChemistryThe earth and its atmosphereGCSEAll boards Created by: 2002_amesCreated on: 28-02-16 19:24 What percentage of the earths atmosphere is nitrogen? 78% 1 of 31 What percentage of the earths atmosphere is oxygen? 21% 2 of 31 What percentage of the earths atmosphere is carbon dioxide? 0.04% 3 of 31 What percentage of the earths atmosphere is argon% 0.93% 4 of 31 What is the earths outer most layer called? The crust 5 of 31 What is the earths inner most layer called? The core 6 of 31 What is the earths middle layer called? The mantle 7 of 31 What is the core mostly made from? Iron and nickel 8 of 31 What is the state of matter of the inner core? Why? Solid because of the high pressure 9 of 31 How does the crust move around? The convection currents cause some movement 10 of 31 What state of matter is the mantle? Thick liquid (viscus) 11 of 31 What state of matter is the outer core? Liquid 12 of 31 How old is the earth and it's atmosphere? 4.6 billion years 13 of 31 Hat process uses fossil fuels and is causing change in the amount of carbon dioxide in the atmosphere? Combustion 14 of 31 How can carbon dioxide get taken from the atmosphere? Plants use it in photosynthesis, animals use it in respiration and it dissolves into oceans 15 of 31 How does carbon dioxide get put back into the atmosphere? It is given out by both plants and animals in respiration 16 of 31 What do greenhouse gases do? They maintain temperatures on earth so they are high enough to sustain life 17 of 31 What are the main greenhouse gases? Carbon dioxide, methane and water vapour 18 of 31 What is the difference between complete and incomplete combustion? Complete combustion happens when the is plenty of oxygen but incomplete combustion happens when there is not enough oxygen 19 of 31 For most fuels what is the product of complete ombustion? Carbon dioxide and water 20 of 31 For most fuel what is the product of incomplete combustion? Carbon monoxide and carbon 21 of 31 What are particulates? When big molecules react with oxygen and not burning properly. As a result, tiny particles containing carbon and unburnt hydrocarbons are produced 22 of 31 What are causes of increase in greenhouse gases in the atmosphere? Industry and factories, heating, transport, electricity and increase in population cause more people to be using these things 23 of 31 What are some possible effects of climate change? Stronger hurricanes, severe heat waves, acidic oceans, melting icecaps, rise of sea level, changes in food produce, 24 of 31 How could carbon dioxide levels be reduced? Plant more trees (respiration), using reduced carbon energy resources (wind power, solar power), burn less fossil fuels, use less electricity 25 of 31 How was water vapour produced? The heat in the atmosphere caused it 26 of 31 How were oceans formed? The water vapour condensed 27 of 31 How did nitrogen appear? Partly because of the reaction between ammonia and oxygen 28 of 31 Why are carbon dioxide levels rising? More fossil feuls are being burnt. This causes combustion and the product is carbon dioxide 29 of 31 In the 1st billion years of theearths life, what was the atmosphere like? It was like Mars' and Venus', mainly carbon dioxide and nitrogen was being built up by volcanic action 30 of 31 What is a carbon footprint? The total amount of carbon dioxide and greenhouse gases used over a full cycle of a product, service or event 31 of 31
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