Geography Hazards

  • Created by: rosie200
  • Created on: 14-03-17 17:29
Seismic hazards
Generated when rocks within 700km of the Earth's surface come under such stress that they break and become displaced.
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Volcanic hazards
Associated with eruption events.
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Intra-Plate Earthquakes
These occur in the middle or interior of tectonic plates and are much rarer than boundary earthquakes.
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Fault
Surface where the plates slip
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Focus
Below the surface where the earthquake starts
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Epicenter
Location above focus on the ground.
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Liquefaction
Waterlogged sand and silt behaved like a liquid after being shaken by the earthquake creating 'sand volcanoes' , quick sand and causing buildings to fall down due to loss of support for the foundations.
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Benioff Zone
An are of seismic corresponding with the slab being thrust downwards in the subduction zone.
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Paleomagnetism
Results from the zone of magma 'locking in' or 'striking' the Earth's magnetic polarity when it cools.
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Subduction zones
Where two plate
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Hazard
A perceived natural/geographical event that has the potential to threaten both life and property.
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Disaster
The realization of the hazard, when it causes a significant impact on a vulnerable population. 10 or more people killed or 100 or more people injured.
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Risk
The exposure of people to a hazardous event
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Resilience
The ability of a system, community or society exposed to hazards to resist,absorb and recover from the effects.
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Disaster hotspot
A country or area that is extremely disaster prone for a number of reasons.
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Multiple-hazard zones
Places where a number of physical hazards combine to create an increased level of risk for the country or population.
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Other cards in this set

Card 2

Front

Associated with eruption events.

Back

Volcanic hazards

Card 3

Front

These occur in the middle or interior of tectonic plates and are much rarer than boundary earthquakes.

Back

Preview of the back of card 3

Card 4

Front

Surface where the plates slip

Back

Preview of the back of card 4

Card 5

Front

Below the surface where the earthquake starts

Back

Preview of the back of card 5
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