Natural Disasters Natural Hazards Natural Hazards are comprised of 2 parts 1 by linzhengnd

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									Natural Hazards
Natural Hazards are comprised of 2
              parts:
 1. A natural disaster (a physical event
    e.g. volcanic eruption, earthquake,
    landslide).

 2. Human activity – for example coastal
 settlement of populations
Basically…..

         A natural disaster is
         an event that has an
         effect on people
         resulting from the
         natural processes in
         the environment.
                     Vulnerability
   Vulnerability is the susceptibility to physical or
    emotional injury or attack

   Human vulnerability leads to financial, structural, and
    human losses.

   A natural hazard will therefore never result in a natural
    disaster in areas without vulnerability, e.g. strong
    earthquakes in uninhabited areas.

   The risk of natural disasters is increasing as a result of
    population growth, urbanization, and alteration of the
    natural environment.
                Positive Effects
   Events that societies label as natural ''disasters"
    may also have beneficial ecological
    consequences.

   However, these benefits tend to only manifest
    themselves months or years after an extreme
    event (e.g., rejuvenation of a coniferous forest
    months and/or years after fires), or are often
    not readily apparent (e.g., recharging of
    groundwater stocks after a flood).
                  Assignment
   Create your own powerpoint presentation about
    a natural hazard.
   You will be assigned a particular hazard.
   You will work in groups of 4.
   You will have 2 periods to complete this
    assignment.
   Should be 6-8 slides
   This will not be presented to the class, instead
    put it into Miss Wilkins pass in folder when you
    are finished.
                       Criteria
1. Describe what the natural hazard actually is.
2. Describe the causes
3. Describe the effects on humans
4. Describe the positive/negative effects on
  ecosystems
5. Provide ways that we can reduce the effects

    The project will be marked out of 10.
    2 points will be awarded for including each of
     the 5 criteria.

								
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