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  1. 1. IntroductionAbout the Pacific Ring of Fire
  2. 2. How many earthquakes occur inPacific Ring of Fire?About 90% of earthquake in the world and 80% of theearthquake with the largest world happens by Pacific Ring ofFire.
  3. 3. Where is the place where the earthquakehappens easily secondarily?The area where earthquakes happen easily secondarily most is5~6% in the Alpide belt. And, the probability that the biggestearthquake happens is 17%.
  4. 4. History of volcanic activityin ChileThe biggest earthquake happened in Chile in 1980. Thevolcanic activity of Chile is done in the Nasca plate. Thevolcano erupted two times in 2008.
  5. 5. History of volcanic activity of BoliviaMany of active volcanoes are international mountains sharedwith Chile.
  6. 6. History of volcanic activity of theUnited StatesThe Redoubt mountain in Alaska became active in 2009 andthe latest activity in the part in the United States of the PacificRing of Fire was made to erupt in the late evening on March 22.The explosion ended in May, 2009.
  7. 7. History of volcanic activity of theJapanTen percent of the active volcano in the world is found inJapan. They are formed with the subduction of Pacific Plateand Philippine Sea Plate. It is said that there might be avolcanic activity in some, small one in these several years.
  8. 8. ConclusionJapan where we live is one country of the Pacific Ring of Fire.We should help by cooperating when the volcano erupts inanother country. Because people are embarrassed.

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