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homework4_ans - SIO 10, Winter 2009 Homework #4 Due: Friday...

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SIO 10, Winter 2009 Homework #4 Due: Friday February 6 th Lectures 10, 11 and 12 (Chapters 9 and 10) 20 Points Write your answers on a separate sheet of paper with your name and student ID on it. Short, concise answers are preferred above lengthy ones. Note that your handwriting must be legible to receive credit. Be sure to answer all sub-questions. 1. a) Describe the differences between a pyroclastic flow and a lahar (2 pts). b) What types of volcanoes produce pyroclastic flow? (1 pt) c) Briefly explain how a volcanic eruption can affect the global average temperature (1 pt). a) A pyroclastic flow is a fast-moving, turbulent avalanche of hot ash and lapilli that rushes down the flanks of a volcano. It forms when a rising ash column collapses due to gravity (p. 271). A lahar is a type of mudflow composed of pyroclastic material and water that flows down the flanks of a volcano (p. 273). b) Stratovolcanos
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This note was uploaded on 12/15/2009 for the course SIO 10 taught by Professor Hedlin,m during the Winter '08 term at UCSD.

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homework4_ans - SIO 10, Winter 2009 Homework #4 Due: Friday...

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