Natural Hazards

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  • Created on: 20-12-20 15:13
What is the definition of a natural hazard?
A natural process which poses major risks to people and property.
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What is a natural disaster?
A natural hazard that has actually happened
and caused damage or harm.
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What are the two main types of natural
hazards?
Geological and Meteorological
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What is a geological hazard?
The are caused by land and tectonic processes.
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What are some examples of geological hazards?
Volcanoes, earthquakes, landslides and avalanches.
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What is a meteorological hazard?
These are caused by the weather and the climate.
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What are some examples of meteorological hazards?
Tropical storms and extreme weather events
such as heatwaves and cold spells.
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What is the definition of hazard risk?
The probability of people being affected by a hazard in a particular area.
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What are some ways that affect hazard risk?
Vulnerability of an area
Capacity to cope
Nature of the Natural Hazard
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How does vulnerability of an area affect
hazard risk?
The more people that are in an area exposed to natural hazards, the greater the probability they will be affected by the natural hazard.
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Give an example of an area which is vulnerable
to hazard risk.
Naples in Italy is a city at a base of a volcano so
it is very vulnerable to volcanic eruptions.
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How does the capacity to cope affect the
hazard risk?
The better a population can cope with an extreme event, the lower the risk of them being severely affected.
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Which type of countries have a better capacity
to cope?
HICs (high income countries) are better able to cope with extreme events as they have the money available to provide protection.
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Give an example of how HICs have a better capacity to cope.
In a scenario of flooding, HICs can afford flood defences and evacuate people to limit the risk of severity.
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What are the three natures of a natural hazard?
Frequency
Time
Magnitude
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How does frequency affect hazard risk?
Natural hazards that occur more often carry greater risks than one that happens little often.
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How does time affect the hazard risk?
The risk from some hazards are greater than others.
Tropical storms can be predicted and monitored giving people to prepare and evacuate.
Earthquakes happen very suddenly so are harder to protect people.
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How does magnitude affect hazard risk?
More severe natural hazards have greater effects.
A magnitude 9.0 earthquake in Japan killed over 15,000 people where as a magnitude 6.3 earthquake in Italy killed around 300 people.
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Other cards in this set

Card 2

Front

A natural hazard that has actually happened
and caused damage or harm.

Back

What is a natural disaster?

Card 3

Front

Geological and Meteorological

Back

Preview of the back of card 3

Card 4

Front

The are caused by land and tectonic processes.

Back

Preview of the back of card 4

Card 5

Front

Volcanoes, earthquakes, landslides and avalanches.

Back

Preview of the back of card 5
View more cards

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