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    Donovan flackericmacneil Donovan flackericmacneil Presentation Transcript

    • Earthquakes Donovan Flack Eric MacNeil 3rd hour April 8, 2011
    • Basic Background Information
      • What is an earthquake?
      • A series of vibrations induced in the earth’s crust by abrupt rupture.
      • How are earthquakes measured?
      • By a Richter scale.
      • What does magnitude mean?
      • greatness of size or amount.
      • How is magnitude measured?
      • Using the Richter scale you can assign a number on the size of the earthquake by measuring it’s maximum amplitude of the seismic wave.
    • Damage Caused by Earthquakes
      • Buildings are destroyed.
      • People are killed
      • City’s are destroyed and a lot of cultural damage is done.
    • Waves
      • What are earthquake waves called?
      • Seismic waves
      • What two types of seismic waves are there?
      • P waves and S waves
      • What two types of body waves are there?
      • P and S
    • Body Waves
      • How do P waves travel?
      • They travel fast through rock material by making the rock to vibrate.
      • How do S waves travel?
      • S waves travel by making the rock vibrate in right angles where the wave is moving.
      • Which move faster?
      • P-waves move faster then S-waves do.
    • Elastic Rebound
      • The elastic rebound theory is an explanation for how energy is spread during earthquakes.
      • They occur at plate boundaries.
    • The Tohoku Earthquake
      • This quake occurred at :
      • occurred near the northeast coast of Honshu.
      • This quake occurred
      • March 11, 2011
      • The magnitude of this quake was
      • The magnitude was 9.0
    • Effects on the environment/earth
      • The earthquake effected the earth’s mineral supplies
      • The earthquake effected the people who live there
      • The earthquake effected the economy of Japan.
    • Effects on the People of Japan
      • Jobs are ruined
      • Everyone houses are destroyed.
      • Business are ruined
    • Effects on the Economy of Japan
      • Japan will go in a depression.
      • Japan has to rebuild everything
      • Japan is in a economic disaster.
    • GPS Sensors
      • One interesting fact about this earthquake is that it moved several GPS sensors. This will require …(Type answer here)
      • How does elastic rebound explain this movement?
      • Type your answer here .
    • Tsunamis
      • A tsunami is a tidal wave
      • Tsunami waves are formed as the displaced water, which acts under the influence of gravity, attempts to find a stable position again.
      • Typically, the height of a tsunami wave is anywhere from 30-50 feet tall, sometimes reaching 100-300 hundred feet tall.
      • The speed at which tsunamis travel depends on the ocean depth. A tsunami can exceed 500 mph in 15,000 feet of water but slows to 40 feet or less in 100 feet of water.
    • Websites Used
      • http://au.answers.yahoo.com/question/index?qid=20080327020633AAvYabf
      • http://www.google.com/search?hl=en&biw=1680&bih=897&q=how+fast+can+tsunamis+travel&aq=f&aqi=&aql=& oq =
      • www.wsaz.com/blogs/askjosh/How_Do_Tsu_117931649.html
      • en.wikipedia.org/wiki/Tsunami
      • www.vaisala.com/Vaisala%20Documents/.../11.Honma.pdf
      • en.wikipedia.org/wiki/2011_Tōhoku_earthquake_and_tsunami
      • en.wikipedia.org/wiki/Elastic-rebound_theory
      • en.wikipedia.org/wiki/2011_Tōhoku_earthquake_and_tsunami
      • thewatchers.adorraeli.com/.../tohoku-earthquake-critically-affects-worlds-mineral-supplies/
      • en.wikipedia.org/wiki/2011_Tōhoku_earthquake_and_tsunami
      • thewatchers.adorraeli.com/.../tohoku-earthquake-critically-affects-worlds-mineral-supplies/
      • en.wikipedia.org/wiki/2011_Tōhoku_earthquake_and_tsunami
      • en.wikipedia.org/wiki/2011_Tōhoku_earthquake_and_tsunami -
      • earthquake-report.com/.../understanding-the-m-9-0-massive-tohoku-sendai-japan-earthquake-and-tsunami/
      • www.clydeco.com/.../The%20Tohoku%20Earthquake%20and%20Tsunami_2011.pdf
      • en.wikipedia.org/wiki/2011_Tōhoku_earthquake_and_tsunami
      • sunshine.chpc.utah.edu/labs/seismic/index.htm