Global Hazards 0.0 / 5 ? GeographyWorld at riskGlobal hazardsASEdexcel Created by: charliedeeCreated on: 02-05-16 15:17 What is a hazard? Something that's a potential threat to human life or property 1 of 23 What are natural hazards? Caused by natural processes e.g. lava flow from a volcanic eruption 2 of 23 What is a hydro-meteorological hazard? Hazards causes by climatic processes e.g. droughts, floods, tropical cyclones, storms 3 of 23 What is a geophysical hazard? Hazards caused by land processes e.g. earthquakes, volcanic eruptions, landslides 4 of 23 What is a disaster? When a hazard seriously affects humans 5 of 23 What does risk mean? The likelihood that humans will be seriously affected by a hazard 6 of 23 What does vulnerability mean? How susceptible a population is to the damage caused by a hazard 7 of 23 What is the disaster risk equation? Risk = (HxV)/C 8 of 23 Give the three ways that the risk of disaster increases Frequency or severity of hazards increases, vulnerability increases, capacity to cope is decreased 9 of 23 What is a context hazard? A widespread (global) threat due to environmental factors such as global warming 10 of 23 What is a chronic hazard? A hazard that returns repeatedly and is therefore difficult to solve and long term 11 of 23 What does magnitude mean? The size of an event 12 of 23 What does frequency mean? How often an event of a certain size occurs 13 of 23 Give three reasons why global warming might be the greatest current global hazard Global warming causes other types of climate change, it's a context hazard, global warming is a chronic hazard 14 of 23 Why are hydro-metrological hazards thought to be increasing? Due to the effects of global warming 15 of 23 Give three human factors why the number of disasters are increasing Rapid population growth & urbanisation, increasing world poverty, exploitation of resources 16 of 23 Give two physical factors why the number of disasters are increasing Global warming, El Nino effects 17 of 23 Why would greater media coverage make it seem like the number of disasters are increasing Because more are being reported and recorded 18 of 23 Give the three management strategies that are causing a decrease in the number of deaths caused by disasters Prediction, prevention, preparedness 19 of 23 Why has there been a levelling off in the trend of decreasing deaths recently? Because the increasing number of vulnerable people in poorer countries means that more people are being affected by disasters 20 of 23 Why are global economic losses due to to disasters increasing? Actual financial costs are increasing (especially in rich countries), relative financial costs are increasing 21 of 23 What is actual financial cost? The amount of money list 22 of 23 What is relative financial cost? The amount of money lost relative to how much the people have to start with 23 of 23
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