Your SlideShare is downloading. ×
  • Like
Upcoming SlideShare
Loading in...5

Thanks for flagging this SlideShare!

Oops! An error has occurred.


Now you can save presentations on your phone or tablet

Available for both IPhone and Android

Text the download link to your phone

Standard text messaging rates apply


  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads


Total Views
On SlideShare
From Embeds
Number of Embeds



Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

    No notes for slide


  • 1. Earthquakes Hayley Cross and Emily Janis Mrs. Smith 5th hour April 8, 2011
  • 2. Earthquake Background Information
    • What is an earthquake?
    • Earthquakes are the shaking that results from the movement of rock beneath Earth’s surface.
    • How are earthquakes measured?
    • Earthquakes are measured by seismographs.
    • What does magnitude mean?
    • The measurement of Earthquakes strength based on seismic waves and movement along faults.
    • How is magnitude measured?
    • Magnitude is measured on the Moment Magnitude Scale.
  • 3. Damage Caused by Earthquakes
    • Landslides
    • Building Collapse
    • Tsunamis
    • Power Outages
  • 4. Waves
    • What are earthquake waves called?
    • Seismic Waves
    • What two types of seismic waves are there?
    • Body Waves and Surface Waves
    • What two types of body waves are there?
    • P waves and S waves
  • 5. Body Waves
    • How do P waves travel?
    • They compress and expand like and accordion
    • How do S waves travel?
    • They vibrate up and down as well as side to side.
    • Which move faster?
    • Primary
  • 6. Elastic Rebound
    • A Mechanism used by geologists to explain Earthquakes and surface ruptures, seen when a deep fault’s movement breaks through to the Earth’s surface.
    • They occur at all types of plate boundaries.
  • 7. The Tohoku Earthquake
    • This quake occurred at :
    • March 11, 2011 at 9:10 am eastern time
    • This quake occurred
    • Honshu, Japan
    • The magnitude of this quake was
    • 9.0
  • 8. Effects on the environment/earth
    • It caused a tsunami
    • Surface ruptures
    • Landslides
    Replace these words with an appropriate image. Replace these words with an appropriate image. Replace these words with an appropriate image.
  • 9. Effects on the People of Japan
    • Oiling Blackouts
    • Damage of nuclear power plants
    • Losses of Hundreds of thousands of lives
    Replace these words with an appropriate image. Replace these words with an appropriate image. Replace these words with an appropriate image.
  • 10. Effects on the Economy of Japan
    • Production is expected to decrease
    • High costs of rebuilding.
    • Disruption of power and water
  • 11. GPS Sensors
    • One interesting fact about this earthquake is that it moved several GPS sensors. This will require All of the GPS sensors to be reset
    • How does elastic rebound explain this movement?
    • It can detect an objects ability to return to its original shape.
  • 12. Tsunamis
    • What is a tsunami?
    • A long high sea wave caused by an earthquake or other disturbances.
    • How do tsunami waves appear at sea?
    • Very small
    • How high can tsunami waves be?
    • From 30 to 300 feet
    • How fast can tsunami waves move?
    • 30 to 500 mph
  • 13. Websites Used
    • ttp://