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Geology 111 Past Exam - Geology 111 Volcanoes and...

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Geology 111 - Volcanoes and Civilization Final Exam - Fall 1997 Part 1: Multiple Choice/Guess Questions (1 point each; 35/103 total) 1. What areas have had many encounters between aircraft and high-altitude eruption clouds in the last 20 years? a) South America and Greenland b) Italy and Greece c) Indonesia, Russia, and Alaska d) Philippines e) C and D* 2. In 1982, a 747 flew through the eruption cloud of Galunggung and came close to crashing. Why did this happen? 3. Most intercontinental commercial air traffic travels at an altitude of about 10 km. In a ten year period, about how many eruption clouds have reached this altitude? 4. The most recent encounter between a jet and a volcanic eruption cloud in Alaska was 5. The 1992 eruption cloud of Mt. Spur, Alaska was well tracked across North America as it was carried by the jet stream. How long did it take to traverse the continent? a) 20 hours b) three days* c) one week d) one month e) two months 6. The most aircraft and passengers to be affected by a single eruption was: 7. Emission of huge amounts of sulfur dioxide from large volcanic eruptions are thought to have caused:
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