investigating earthquakes

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  • 1. Investigating Earthquakes Anne Wampler C6 C6 C6

2. CONTENTS

  • Our Maps
  • What have you learned about earthquakes and earthquake prediction?
  • What factors influence earthquake prediction?
  • Where on Earth do most of the really big earthquakes strike?

3. Our maps 4. Significant AND BIG Quakes

  • These are the quakes ranging in magnitude from 7 to 10 that occurred from 2150 BC to 1994 AD. Each pink dot represents an earthquake.

These are all of the earthquakes above magnitude 4 which occurred in 2011. Each yellow dot represents an earthquake 2011 QUAKES 5. Earthquakes and Earthquake Prediction Earthquake Prediction Earthquake Prediction 6. THings i learned

  • It is possible to predict fairly accurately when an earthquake is due.
  • the methods which scientists use to predict earthquakes
  • that some types of plate boundaries are more prone to earthquakes than others

Put picture of both Sig_Big and 2010-11 7. Methods of Prediction

  • Mostly, scientists today predict earthquakes by looking at areas where pressure is building up and, judging by the recency of the last quake, guessing at the general date of the next.
  • Satellite radar can sense any plate movement, even at the slow rate of 1mm per year.

8. Future methods

  • Satellites may be able to predict earthquakes by sensing the infra red light that is produced by the pressure build up in the rock.
  • Scientists may be able to use the miniscule fluxuations in earths magnetic field that occur just before major earthquakes.

9. Factors 10. Location

  • proximity to plate boundaries
    • The further a place is from a boundary, the less likely it is to have a major earthquake.
  • type of plate boundary
    • Most major earthquakes occur near convergent plate boundaries.

11. Plate Boundaries

  • The blue lines mark the convergent plate boundaries which I think are most likely to cause earthquakes soon because they havd not had a major quake recently.

12. Major earthquake locations 13. Top 10 Countriesthat are due for an earthquake that are due for an earthquake

  • Mainland United States
  • Mexico
  • Russia
  • Venezuela
  • Colombia
  • Algeria
  • Spain
  • Portugal
  • India
  • New Zealand

14. Reasons

  • I believe that these 10 countries are most likely to have a major earthquake soon because they are:
    • on convergent boundaries
    • have had large earthquakes in the past
    • have not had a significant earthquake in the past year.

15. Most likely country to have a major earthquake next

  • The United States
    • I believe this because:
      • the U.S.s north west coast is on a convergent boundary
      • they have constant small quakes
      • that part of the boundary has not had as many major quakes as the rest of the convergent boundaries