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Earthquakes

by: Maxine & Dhwani
by

dhwani gireesan

on 31 January 2013

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Transcript of Earthquakes

Earthquakes By: Maxine & Dhwani What is an Earthquake? The Results of an Earthquake Pictures of Incidents - Earthquakes are vibrations on the
surface of the Earth
- They are also called tremors or trembles
- It is caused by the flowing magma to
move the tectonic plates
- Earthquakes can cause tsunamis and other
disasters
- They have different sizes of magnitude
and can be measured with the ´Richter
Scale`
- The Geographical definition:
A shock or series of tremors, due to a
sudden movement, generated at a
point known as the Hypo center or
Seismic focus Earthquakes & Tsunamis The Richter Scale Magnitudes & Strengths How We Prepare In some cities where earthquakes happen, the people who are responsible for the safety (police, ambulance, etc.,...) inform the city through loudspeakers, TV, radio and other media, when it will happen , where they are safe and how to get people prepared. In countries like Japan where earthquakes are pretty often, little kids get trained at school, how to prepare for an earthquake so they know how to react when they have to face one. History of Incidents The last few earthquakes since the year 2000:

- Jan. 26 2001 Gujarat , India
- Dec. 23 2003 Bam , Iran
- Dec. 26 2004 Indonesia
- Oct. 28 2005 Kashmir , Pakistan
- May 26 2006 Java , Indonesia
- May 12 2008 Sichuan , China
- Sept. 30 2009 Sumatra
- Jan. 12 2010 Haiti
- Feb. 27 2010 Chile
- Feb. 22 2011 New Zealand
- Mar. 11 2011 Japan
- Aug. 11 2012 Iran By: Maxine & Dhwani Answers ( to the questions) : 1. An earthquake is a tremor in the
surface of the causing the continental
plates to move
2. It comes up on all sorts of media and is
announced everywhere A.S.A.P.
3. Dead people, tsunamis & a destroyed place
4. They cause the tsunamis
5. Charles Richter 5 Questions ( for you ) : 1. Define what an earthquake is
2. How do the people get to know
that there will be an earthquake
coming up?
3. Name one result of an earthquake
4. How are earthquakes related to
Tsunamis
5. Who invented the Richter scale ? - The result of an earthquake can be
hazardous depending on the magnitude
and strength of it
- The lower the magnitude (and strength)
the smaller the damage...
- ... But the higher the magnitude (and
strength) : The bigger the damage
- A earthquake can be small but
furious, leaving back hundreds of
dead people and a completely
destroyed place
- Another result: Tsunamis - The seabed shakes and deforms
during an earthquake causing
the waves to get bigger
- These enormously big waves are
another result of an earthquake:
They are called Tsunamis
- Tsunamis get bigger on flat
ground, meaning they get bigger
on land - The Richter Scale is just one
of the ways to define the amount of
energy released in an earthquake
- The scale has ten bases and the
higher the measure is, the bigger the
danger
- The scale was invented by Charles
Richter: Hence the name Fact: There are 'moonquakes'
known as earthquakes on the moon.
While on earth an earthquake lasts about one minute, on the moon, it lasts ten minutes!! - Magnitude is the strength
an earthquake
- The magnitude is measured
by the waves of an earthquake
recorded by seismographs
- A seismograph is a devise to
measure magnitude during an
earthquake...
- ... and was first used by the chinese ( still: thank you for listening! )
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