Post on 19-Jan-2015
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- 1. Investigating Earthquakes Anne Wampler C6 C6 C6
- 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
- New Zealand
- 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