Transcript How do tsunamis occur by annika

How do
tsunamis
occur?
Presentation created by: Annika Velasco 
Tsunami’s are a type of natural
disaster. The word tsunami
originated from Japan
meaning ‘harbour waves’, and
this massive wave is caused by
tectonic plates in the earth’s
crust moving.
What are tsunamis?
A tsunami is a series of massive waves. Tsunami
waves are called the wave train and can get
as high as 100 feet! They are very strong and
can travel at the speeds of about 500 miles or
805 kilometers an hour, almost as fast as a jet
plane. Many scientists also believe that a
tsunami created by a meteorite had occurred
on earth 3.5 billion years ago.
How does a tsunami occur?
A tsunami is formed by either a seaquake or
an underwater volcanic eruption which is
caused by the plates in the earth’s crust
known as tectonic plates. When they move or
collide they make the ground shake which
causes the water above it to violently move
up and down creating huge waves. These
waves are always high on energy and can
travel miles across the ocean.
http://www.enchantedlearning.com/subjects/tsunami/
How do you survive a tsunami?
To survive a natural disaster such as a tsunami it’s a good idea to provide you and
your family a disaster plan. In a disaster plan you will need to have an evacuation
route for your house so you know exactly what to do during a tsunami. Know
whether you are in danger. Most coastal areas have tsunami warning systems in
place. If an earthquake occurs that may have a tsunami people are warned so
they can evacuate the area or find higher ground. You can also prepare a
disaster supplies kit for your house and car. Include a first aid kit, canned food and
can opener, bottled water, battery operated radio, flash light, protective clothing,
a flair, water cleaning tablets and written instructions on how to turn off electricity,
gas and water. During a tsunami to stay safe you should follow instructions issued
by local authorities. You would probably want to evacuate the area immediately,
get to higher ground and as far inland as you can. After a tsunami help injured or
hurt people and stay out of buildings if water remains around it. Tsunami waters
can cause buildings to sink, floors to crack, or walls to collapse. When re-entering
homes use extreme caution and check for any gas leaks. Open windows and
doors to help dry things out.
How has science help society deal with
tsunamis?
Most of the countries in the world did not have
tsunami warning systems in place which means this
causes more deaths or injuries when a tsunami
occurs. After the tsunami in Indonesia (2014) took
the death toll of about 230,000 people, they realised
that they needed to do something to save more
lives. Luckily science has stepped in and created
warning systems for tsunamis and buildings on higher
ground to shelter people during a tsunami.
How are tsunamis measured?
Tsunamis are measured by
seismographs. Seismographs
measure the vibration in the
ground. This is also used to detect
earthquakes.
http://www.toonpool.com/cartoons/Tsunami%20%20basado%20en%20Hokusai_89929
END 
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Organisation/Author (if
available)
Web URL
Published date
Title of site
Title of page
Access Date (the date
you looked at all your
information
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http://kifsgeo.com
1889
Kids geo
Tsunamis
27/7/15
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http://ducksasters.com
2015
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Earth science for kids
28/7/15
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2015
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11 facts about tsunamis
28/7/15
Crystal
http://www.weatherwiz
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2015
Weather wiz kids
Tsunami facts
29/7/15
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2009
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2015
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Timeline: 100 years of
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30/7/15
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1999
E how
What types of
instruments are used to
measure a tsunami?
4/8/15
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The 10 most destructive
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Itic.ioc.unesco.org
2015
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