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Natural Disasters Quiz 3 - Natural Disasters Quiz 3...

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Natural Disasters Quiz 3 Quiz 3: Question 1   Which two main factors result in more violent eruptions of magmas?    Student Response Correct Answer Feedback A. not too much water and low  enough viscosity.      B. more water and higher  viscosity of the magma.      C.  higher viscosity and a  narrow enough vent.      D.  strong rocks around the  vent and more water.      E. a large enough volcano  with low-viscosity magma.      Score: 1/1  Comments:   2. Quiz 3: Question 2   A rhyolite dome grows slowly because:   
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Score: 1/1  Comments:   3. Quiz 3: Question 3   Following the May 1980 eruption of Mount St. Helens, Washington, thousands of trees lay on the ground, all  parallel to one another, because:    Score: 1/1  Comments:   4. Quiz 3: Question 4   If an ash flow approaches you from across a kilometer-wide lake, are you likely to be safe or not? Explain why.   
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