Volcanoes - Effects and Responses 0.0 / 5 ? GeographyNatural hazardsGCSEAQA Created by: i13ekilcullenCreated on: 14-06-17 21:08 Primary Effects Buildings and roads are destroyed by lava flows and pyroclastic flows - buildings may collapse if ash falls on them People and animals are injured or killed by pyroclastic flows, lava flows and falling rocks - or they are suffocated by volcanic gases Crops are damaged and water supplies are contaminated when ash falls on them 1 of 4 Secondary Effects Mudflows and landslides form when volcanic material mixes with water (like heavy rainfall) Floods can be caused by hot lava melting ice and snow on the volcano Transport networks are blocked or destroyed, so aid and emergency vehicles can't get through People are left homeless and businesses are destroyed Ash makes fields more fertile once it has broken down 2 of 4 Immediate Responses Evacuate people before the eruption (if ti was predicted) or evacuate as soon as possible after the eruption starts Provide food, drink and shelter for evacuees Treat injured people and rescue cut off people Provide shelter for those left homeless or evacuated Foreign governments or charities may send aid workers or financial donations 3 of 4 Long-Term Responses Repair and rebuild infrastructure and resettle affected people elsewhere Repair roads and rail lines for transport Improve or revise evacuation plans Boost the economy with tourism 4 of 4
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