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Which of the following magmas has the highest viscosity?
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Which plate boundaries are most likely to form mountains?
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exam 3--online

6

QuestionAnswer
Which of the following magmas has the highest viscosity? high silica content, low temperature
Which plate boundaries are most likely to form mountains? convergent
Which type of convergent plate boundary is most likely to have mountains, but not volcanoes? continent-continent
How many active volcanoes are there on earth? more than 1,500
Where is the "Ring of Fire" located? around the Pacific Ocean
What type of volcanoes form the Hawaiian Islands? shield volcanoes
How many people live within danger zone of active olcanoes on earth? about 500,000
What is the most important factor used to determine the volcanic explositivy index of an eruption? Volume of erupted material
How much of Mount St. Helens was blown off during the 1980 eruption? 400 meters
Where was the largest documented volcanic eruption on the continental US? yellowstone
This material ejected from an erupting volcano includes airborne particles of all sizes? tephra
This large volcanic eruption generated so much ash that global temperatures cooled by about .5*C for the two years following the event? mount Pinetubo
What kind of volcano is Mount St. Helens? stratovolcano
Which kind of volcano would have the shortest lifespan? cinder cones
What material compromises most mountains? crustal rocks
What is the balance between topography and the thickness and composition of the underlying material? isostasy
What hazards are commonly associated with volcanic eruptions? -poisonous or otherwise deadly gases -pyroclastic flows -lava flows -lahars
Created by: cbalaban
 

 



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