Supervolcanoes 0.0 / 5 ? GeographyNatural hazardsGCSEAQA Created by: katiebrosterCreated on: 02-05-16 12:42 how high would magma be flung into the air? 50km into the atmosphere 1 of 17 how many cubic km of lava would pour out of the volcano? 1,000 2 of 17 where is the greatest danger of the blast? within 1,000km 3 of 17 what % of people would be killed within 1,000km of the blast? 90% 4 of 17 what would kill virtually all life within 1,000km of the blast? falling ash, lava flow, the sheer explosive force 5 of 17 how long could it take for the ash to erode away and vegetation to recover? years, possibly decades 6 of 17 what does inhaled ash do? forms a cement like mixture in humans 7 of 17 what does ash do to sunlight? it reduces it 8 of 17 how can ash affect rainfall and what are the consequences? triggers rainfall, which can cause lahars (mudslides) 9 of 17 how many cm of dry ash is enough to collapse building? 30 10 of 17 what does ash do to water supplies? it contaminates them 11 of 17 how would the eruption throwing ash, rock, dust and sulphur dioxide etc. into the atmosphere affect temperatures? it reflects solar radiation, so temperatures on Earth decrease (like a nuclear winter) 12 of 17 by how much would global average annual temperatures drop by? up to 10* (Northern hemisphere - up to 12*) 13 of 17 how long could the colder temperatures last for? 6-10 years - gradually returning to normal 14 of 17 what could the change in climate do to some plant and animal species? cause them to become extinct 15 of 17 how could this affect the Monsoon rains? it could prevent them causing mass starvation 16 of 17 what would happen to world agriculture? it would be devastated creating severe disruption of food supplies and mass starvation 17 of 17
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