- Created by: Théa
- Created on: 08-06-13 18:25
What is a Natural Hazard?
-A natural hazard is an extreme natural event or process that causes loss of life and/or extreme damage to property and creates severe disruption to human activities
-They include: earthquakes, volcanic eruptions, tsunamis, tropical storms, floods, and droughts
-ONLY when an event affects people is it called a NATURAL DISASTER
Why do Natural Hazards' Locations vary?
-The location of a natural hazard varies according to the type of hazard.
-Some natural hazards occur all over the world; for example, floods caused by heavy rainfall.
-Others, are very limited in area, such as landslides and tornadoes.
-Yet others are related to certain geological or climatic conditions and are concentrated in certain areas; for example earthquakes, avalanches in mountainous areas, or tropical storms
How often do Natural Hazards occur?
-How often a natural hazard occurs can depend on location of the hazard; for example, Bangladesh regularly suffers from river flooding as a result of annual heavy rains caused by monsoons.
-Hurricanes, cyclones and typhoons only occur during a certain period of the year, when weather conditions are suitable for their formation.
-A major earthquakes can produce hundreds of aftershocks, some of which can be almost as powerful as the initial ground shaking.
-More damage tends to happen in MEDCs, because they have more infrastructure and existing things which can be damaged.
- 74% of the world total of 89850 people killed on average, each year in hazards, were in Asia
- 10% of deaths occur in Africa
- 44% of earthquakes occur in Asia
- 54% of drought and famine occurs in Africa