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The Ancash Earthquake

By: Monica Bueno
by

Monica Bueno

on 5 April 2012

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Transcript of The Ancash Earthquake

The Ancash Earthquake Monica Bueno The Ancash Earthquake The Ancash Earthquake or Great Peruvian Earthquake is an undersea earthquake. It is one of the most biggest natural disasters ever witnessed in the world which caused half a billion dollars worth of damage. It lasted for approximately 45 seconds but caused terrible destruction. What Caused the Earthquake? The cause of the earthquake was the South American plate subducting the Nazca plate. Subduction is when a tectonic plate moves under another tectonic plate, sinking into the Earth's mantle. Where this happens, it is called a subduction zone. The Nazca plate is the oceanic crust and the South American plate is the continental crust. What happened? What happened in the Ancash Earthquake was the Nazca Plate was being subducted by the South American Plate resulting in a disastrous earthquake and a horrific avalanche, in the town of Yungay. This caused major damage in Peru. When & Where did the Earthquake Occur? The Ancash Earthquake occured on the 31st of May, 1970 at approximately 3:23pm (Peruvian time). The earthquake happened in Peru. It's epicenter was located 35 kilometres off the Peruvian coast in the Pacific Ocean. Who was affected by the earthquake? People who were affected by the Ancash Earthquake where the residents of Peru, mainly the residents of Ancash and La Libertad. Over 3 million people were affected by the earthquake. Around 74 194 individuals died, 25 600 got injured and more than 1 million were left homeless. What was the Richter Scale Reading? The Richter Scale reading was 7.9. The Richter Scale measures the magnitude of the earthquake. What was the Modified Mercalli Scale level? The Modified Mercalli Scale level was VIII (8). The Modified Mercalli scale measures what people have witnessed during the earthquake. VIII (8) on the Modified Mercalli Scale means destruction, it causes major damage to poorly structured buildings but minor damage to strong buildings. Questions! I have prepared some questions for you to test your knowledge on the Ancash Earthquake. 1. Where was the avalanche located?

2. Which plate was subducting the Nazca plate?

3. Where was the epicenter of the earthquake located?

4. What is the Ancash Earthquake?

5. What is subduction?

6. What was the Modified Mercalli Scale level?

7. What is the Richter Scale reading?
Bibliography Information: http://www.buzzle.com/articles/1970-peru-earthquake-1970-ancash-earthquake.html

Images: Google Images
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