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Natural
Disasters
Natural
Disasters are caused by nature.
Nevertheless, there is growing strong
evidence that increased severity and
frequency of natural disasters such as
Hurricanes, Tornadoes might be
linked to global climate change.
However, other natural disasters such as
earthquakes and volcanoes are not
directly related to global warming or
climate change and occur mainly due to
various natural phenomena's described in
detail under these categories. Click
each category to learn more. |
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Hurricanes |
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Tornadoes |
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Hurricanes are violent tropical
storms with winds minimum speed of
at least 74 mph. They form over warm
ocean waters, usually starting as
storms. As they drift slowly and are
fueled by the warm waters of the
tropics.
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Tornadoes are violent
windstorms characterized by a twisting,
funnel-shaped cloud. Tornado is a
small-diameter column of violently
rotating air developed within a
convective cloud and in contact with the
ground.
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Earthquakes |
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Volcanoes |
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An earthquake is used to
describe any seismic event which
generates seismic waves. An earthquake
occurs as a result of a sudden release
of energy in the Earth's crust which
creates seismic waves.
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In
reality, volcanoes are vents in the
Earth’s surface from which molten rock
called lava is released. There are
around 1900 active volcanoes around the
world, including those that have been
active in historical times.
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Tsunamis |
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Landslides |
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Tsunamis
are ocean waves caused by large
earthquakes and landslides that occur
near or under the ocean. Scientists do
not use the term "tidal wave" because
these waves are not caused by tides.
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Landslides
are a serious geologic hazard common to
almost every state in the United States.
It is estimated that nationally they
cause up to $2 billion in damages and
from 25 to 50 deaths annually.
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