Transcript Natural Disasters

Natural Disasters
What are Natural Disasters?
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Natural Disasters are disasters that occur in this
world naturally.
 Natural disasters can happen at any location at
any time throughout the universe.
 Natural disasters can destroy cities, or
sometimes a whole country if it is that
severe.
 They can occur on land, in the water, and
with the weather.
Natural Disasters
What are land
movement disasters?
 Land movement disasters are disasters
that occur on land.
 Some land movement disasters are
earthquakes, avalanches, volcanic
eruptions, wildfires, landslides and
many more.
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Avalanches are
usually downhill fall of
snow or mud but
sometimes it may get
mixed up with mud.
Avalanches
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Avalanches are
rapid downhill flow
of a large mass of
snow or ice
dislodged from a
mountainside or
the top of a high
cliff, or a similar
fall of rocks and
earth.
Avalanches
Volcanic Eruptions
 A volcano is an opening in the
planets surface which lets hot,
rocks, ash, molten lava, and
gases onto the surface from
inside the planet.
 Volcanic activity involving the
extrusion of rock intends to
form mountains over a period
of time.
 Volcanoes are found where
tectonic plates are either
diverging or converging.
 A volcanic eruption is when a
volcano erupts and lets out
lava, rocks, ash, and many
more things.
 These things that are let out
during a volcanic eruption are
from the inside of the planet.
 Volcanoes can form where
there is stretching and thinning
of the planet’s crust or surface.
Volcanic Eruptions
• Wildfires are common in
different parts of the world
and they happen in cycles.
• They are useful in the
wilderness sometimes
because the effects of the
fires help some species with
growth and reproduction.
• Nine out of ten wildfires are
caused by humans
interaction.
Wildfires
 Wildfires are when fire is
spreading quickly. A wildfire
is a fierce fire that spreads
rapidly and mostly in an area
of wilderness
 A wildfire is any uncontrolled
fire which occurs in
wilderness, wild lands, or
bushes.
 Another word to say wildfire
can be bushfire, hill fire, and
many more things can be the
same meaning as a wildfire.
 Wildfires means something
furious or destructive.
Wildfires
Earthquakes
 Earthquakes
are shaking of the Earth’s crust.
 An earthquake is a violent shaking of the Earth’s crust that may
cause destruction to buildings and cities.
 Earthquakes are caused mostly by rapture of geological faults, also
by volcanic activity, landslides, mine blasts, and nuclear experiments.
 Some earthquakes that happened before are the Haiyuan earthquake
in 1920 which happened in China, Messina earthquake in 1908 which
happened in Italy, and the Quito earthquake in 1797 which happened
in Ecuador.
Earthquakes
Water Disasters
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Water Disasters are disasters that occur in
water such as oceans, rivers, lakes, etc.
Some types of water disasters are
droughts, tsunamis, tidal waves, floods,
and many more.
• Droughts are long period of extremely dry
weather when there is not enough rain for
the successful growing of crops or the
replenishment of water supplies.
Droughts
Floods

Floods are water covering previously dry area.
 A flood is a very large amount of water that has
overflowed from a source such as a river, lake,
and ocean.
 They can also have overflowed a broken pipe
onto a previously dry area.
 The damages after a flood is harsh because
everything or parts of things will be under water
and the effects of a flood can kill many people.
Floods
Tsunamis
• Tsunami is a large
• Tsunamis can savagely
•
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attack coastlines, causing
devastating property
damage and loss of life.
Tsunamis are sometimes
called tidal waves because
they may resemble a nonlunar-tidal rush of rapidly
rising water, rather than big
cresting waves reaching the
shore.
Some tsunamis are in the
Indian Ocean which
happened with a
earthquake as well.
•
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destructive ocean wave
caused by an underwater
earthquake or some other
movement of the earth’s
surface.
A tsunami is a series of
waves created when a
body of water is quickly
displaced.
Earthquakes, and volcanic
eruptions, may happen
underwater or above
water which causes a
start of tsunami in the
oceans, rivers, or
coastlines.
Tsunami
Weather Disasters
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Weather disasters are disasters that
occur with the weather and causes
changes in the weather.
Some types of weather disasters are
tornadoes, cyclones, hurricanes,
blizzards, lighting, thunderstorms.
Hurricanes
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Hurricanes are several tropical storms that can form in the
Atlantic Ocean, Caribbean Sea, Gulf of Mexico, and in the
Pacific Ocean.
Hurricanes gather heat and energy through contact with warm
ocean waters.
Hurricanes are named so people can spot and identify them
while they move across the ocean.
Hurricanes that occur at the seas, and oceans cause large
waves, heavy rain, and high winds. These things can cause
destruction to international shipping and may cause many
shipwrecks.
Tropical cyclones is another name for hurricanes when it is at
a certain level or at a certain size.
Some hurricanes that have occurred are the Bombay
Hurricane in 1882 in India, and Hurricane Katrina which
happened in the United States.
Hurricanes
Lighting storms and
Thunderstorms
 Lighting storms and
thunderstorms are
basically the same thing.
 They both contain flashes
of lighting striking an area
and the effects of the
lighting causes thunder.
 Sometimes during these
storms, it also rains,
snows or hails in certain
cases.
 A lighting is caused when
a electrical charge is
contained in a cloud and
then releases it on the
earth’s surface. The
temperature of a lighting
bolts is extremely hot.
Lighting storms and
Thunderstorms
Tornadoes
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Tornadoes can happen
when there is a
thunderstorm. The color of
tornadoes ranges from
shades of gray, shades of
brown, and white. Some
times they are not that
visible to see.
A tornado is a dangerous
rotating column of air
which is connected to the
surface of the earth and a
clod. It destroys anything it
touches in its path.
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Tornadoes are extremely
destructive funnel-shaped
rotating column of air that
passes in a narrow path over
land.
Tornadoes can come in
many sizes and shapes. The
usual shape of a tornado is a
funnel, which is seeable and
is narrow end touches the
earth’s surface.
Tornadoes
Cyclones
A cyclone is a large-scale storm system with
heavy rain and winds that rotate
counterclockwise in the Northern Hemisphere and
clockwise in the Southern Hemisphere around
and toward a low pressure center.
Cyclones have also been seen on other planets
other then the Earth, such as Mars, and Neptune.
Some deadly cyclones that happened before are
the Bhola cyclone in Bangladesh in 1970, the
India cyclone in India in 1839, the Calcutta
cyclone in India in 1737, and the Bangladesh
cyclone in Bangladesh in 1991.
Cyclones
Resources
 http://en.wikipedia.org/wiki/File:Hurricane_Katrina_August_28
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_2005_NASA.jpg hurricanes .
http://en.wikipedia.org/wiki/File:Timpavalanche.jpg
avalanches
http://www.emergencysurvivalkitsblog.com/wpcontent/uploads/2008/12/tornado-natural-disaster.jpg
tornadoes
http://livesaildie.com/files/2007/04/tsunami-wave.jpg tsunami
http://www.utexas.edu/features/2006/hurricanes/graphics/hurric
anes5.jpg hurricane
http://www.cosmosmagazine.com/files/imagecache/news/files/2
0061201_earthquake.jpg earthquakes
http://news.nationalgeographic.com/news/2006/05/images/volca
no.jpg volcano
http://www.rocksonfire.com/volcano%20eruption.jpg volcano
eruption
Resources
 http://library.thinkquest.org/03oct/01027/cyclone.jpg
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cyclones
http://www.realestatesizzle.com/wpcontent/uploads/2007/07/bayshore_flood_small.jpg floods
http://www.co.pennington.sd.us/_pictures/flood.jpg floods
http://www.windsun.com/pictures/Lightning1.jpg lightning
http://www.insidesocal.com/tomhoffarth/lightning.jpg
lightning
http://www.tetonwyo.org/em/docs/images/avalanche2.jpg
avalanches
http://www.waco-texas.com/city_depts/fire/images/tornado.JPG
tornadoes
http://static.howstuffworks.com/gif/earthquake-gallery-3.jpg
earthquakes
Resources
 http://schools-wikipedia.org/2006/images/64/6469.jpg
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cyclones
http://www.jobsletter.org.nz/images/tsunami.jpg tsunami
http://www.air-andspace.com/LockettBooks%20prints/19911011%20Gaviota%203
6%20Lightning%20Lulu%2011x14%20l.jpg lightning
http://blogs.tnr.com/tnr/blogs/environmentandenergy/Drought%
20Pix.jp drought
http://www.j2fi.net/wp-content/uploads/2007/11/drought.jpg
Drought
https://www.assurancegroup.com/IMSPlus/Sec/wildfire4.jpg
Wildfire
http://ti.org/Wildfire.jpg wildfire
http://www.geog.umd.edu/research/projects/Images/wildfire_co
nsumption.gif wildfire