Natural Hazard Perception Flashcards Preview

A Level Physical Geography > Natural Hazard Perception > Flashcards

Flashcards in Natural Hazard Perception Deck (10)
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1
Q

When does a natural event become a natural hazard?

A

Where a natural event poses a potential threat to human life or property.

2
Q

When does a natural hazard become a natural disaster?

A

When the event is realised upon a vulnerable population leading to significant loss of life or property

3
Q

State with examples the three types of hazard

A

Geophysical - e.g. Seismic activity such as earthquakes and landslides
Atmospheric hazards- climactic processes e.g. Wildfires and draughts
Hydrological - caused by movement of water e.g. Storm surge

4
Q

What is vulnerability?

A

How susceptible a population is to a hazard

5
Q

Give 5 factors that effect risk perception

A
Wealth 
Religon 
Education 
Past experience 
Personality
6
Q

Describe four type of response to a hazard

A

Prevention - e.g. Tidal barriers attempt to reduce impact of the hazard
Mitigation - admit the hazard is inevitable but reduce the impacts, through better prediction and preparation ( reduce impact not magnitude)
Manage - government level schemes to reduce impacts (similar to mitigation)
Fatalism - nothing, i.e. Its gods will, also may argue preventative methods are harmful to ecosystems

7
Q

What is risk sharing?

A

Reducing the impact on the individual by spreading it over more people

8
Q

What magnitude and frequency of hazard is likely to be the most destructive? Why?

A

High magnitude low frequency

Powerful but population isn’t prepared as well

9
Q

Describe the hazard management cycle

A
Mitigation - minimise future disasters 
Preparedness - plan a response 
EVENT
Response - emergency services etc 
Recovery restoration + start of mitigation
10
Q

What is the park model?

A

Quality of life plotted against time
Steep drop at start represents the disaster
Relief occurs after
Quality may increase get back to normal or never recover