Natural Hazards Flashcards
(9 cards)
What is the definition of a hazard?
A hazard is an event which has the potential to cause harm to the environment, people or the ecceonomy.
What is the definition of a natural hazard?
A natural hazard is an environmental process and occurs without the presence of humans.
What does hazard risk mean?
A hazard risk is a chance that an area or population will be affected by the natural hazard.
Hazard risk: population
As the world population increases , more people live in areas which are vulnerable to natural disasters hazards
Hazard risk: urbanisation and population density
Urban areas are more densely populated, increasing the numbers of people at risk
Hazard risk: frequency and magnitude
How often the hazard occurs, as well as the size and strength of the event.
Hazard risk: level of development
High income countries are more prepared and are able to cope with the effects than low income countries and newly emerging economies.
Hazard risk: prediction
Some hazards such as earthquakes are impossible to predict and so people have no warning
Hazard risk: human activity
Human activities such as deforestation and urbanisation increase the level of hazard risk