this lesson discuess about causes of natural hazards, impacts of natural hazards, process of naural disaster and types of natural hazards based of different reasons
2. Learning outcomes
At the end of this lesson , you will be able to:
Describe different types of natural hazards
Explain the cause and global distribution of these natural
hazards, and relate them to the Earth’s structure
Explain the impacts on people and the environment
Explain different strategies for managing these natural
hazards
3. What does natural hazard mean?
A natural hazard is a physical event
that has a potential to cause loss of life
or injury and damage property and
infrastructure.
4. Time
They can be short term events that last just
a few minutes or long term events that can
happen several years.
5. Classification
Natural hazards can be classified in a number of
different ways. The most common classification is based
on the cause of the hazard, including:
Geological hazard
example : earthquake and volcanic eruption
Climatic hazard
example : droughts, tropical cyclone and floods
6. Cont’d
Natural hazard can also classified are based on
the :
Magnitude or intensity of the event
Speed at which the event takes place
Duration of the event
Frequency of the event
7. Natural Disaster
A natural disaster is when there is serious
disruption to a community caused by a
natural hazard, which can involve social,
economic and environmental losses or
impacts.
A natural disaster follows a natural hazard.
8. conditions
The conditions to be counted as a disaster by
UN:
A report of 10 or more people killed
A report of 100 or more people affected
A state of emergency declared by the government
of the affected country
A request by the relevant national government for
international assistance.
9. Impact
The impact of natural disaster on a community
will depend on the :
Length of time people are exposed to the natural
hazard.
Vulnerability of people affected
People’s ability to cope with the effects.
10. Topic revision question
1. Define the term natural hazards.
2. Explain about the classification of natural
hazards
3. Describe the difference of natural hazards
and disasters.