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

When does a natural event become a natural hazard?

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

2

When does a natural hazard become a natural disaster?

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

3

State with examples the three types of hazard

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

What is vulnerability?

How susceptible a population is to a hazard

5

Give 5 factors that effect risk perception

Wealth
Religon
Education
Past experience
Personality

6

Describe four type of response to a hazard

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

What is risk sharing?

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

8

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

High magnitude low frequency
Powerful but population isn't prepared as well

9

Describe the hazard management cycle

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

10

What is the park model?

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