Global Hazards

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What is a hazard?
Something that's a potential threat to human life or property
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What are natural hazards?
Caused by natural processes e.g. lava flow from a volcanic eruption
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What is a hydro-meteorological hazard?
Hazards causes by climatic processes e.g. droughts, floods, tropical cyclones, storms
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What is a geophysical hazard?
Hazards caused by land processes e.g. earthquakes, volcanic eruptions, landslides
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What is a disaster?
When a hazard seriously affects humans
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What does risk mean?
The likelihood that humans will be seriously affected by a hazard
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What does vulnerability mean?
How susceptible a population is to the damage caused by a hazard
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What is the disaster risk equation?
Risk = (HxV)/C
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Give the three ways that the risk of disaster increases
Frequency or severity of hazards increases, vulnerability increases, capacity to cope is decreased
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What is a context hazard?
A widespread (global) threat due to environmental factors such as global warming
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What is a chronic hazard?
A hazard that returns repeatedly and is therefore difficult to solve and long term
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What does magnitude mean?
The size of an event
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What does frequency mean?
How often an event of a certain size occurs
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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
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Why are hydro-metrological hazards thought to be increasing?
Due to the effects of global warming
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Give three human factors why the number of disasters are increasing
Rapid population growth & urbanisation, increasing world poverty, exploitation of resources
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Give two physical factors why the number of disasters are increasing
Global warming, El Nino effects
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Why would greater media coverage make it seem like the number of disasters are increasing
Because more are being reported and recorded
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Give the three management strategies that are causing a decrease in the number of deaths caused by disasters
Prediction, prevention, preparedness
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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
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Why are global economic losses due to to disasters increasing?
Actual financial costs are increasing (especially in rich countries), relative financial costs are increasing
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What is actual financial cost?
The amount of money list
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What is relative financial cost?
The amount of money lost relative to how much the people have to start with
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Other cards in this set

Card 2

Front

What are natural hazards?

Back

Caused by natural processes e.g. lava flow from a volcanic eruption

Card 3

Front

What is a hydro-meteorological hazard?

Back

Preview of the front of card 3

Card 4

Front

What is a geophysical hazard?

Back

Preview of the front of card 4

Card 5

Front

What is a disaster?

Back

Preview of the front of card 5
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