homework2_ans

homework2_ans - SIO 10 Winter 2010 Homework # 2 Due Friday,...

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SIO 10 – Winter 2010 Homework # 2 Due Friday, January 22 Lectures 4,5,6 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) What is the driving force behind plate tectonics? (1 pt) Convection b) Briefly describe the 3 types of plate boundaries and sketch their sense of motion. (1 pt) convergent, divergent and transform. The plates move toward each other in convergent boundaries, move apart in divergent boundaries, and slide past each other in transform boundaries c) Where is oceanic crust created, and where is it destroyed? (1 pt) Oceanic crust is created at mid-ocean ridges and destroyed in subduction zones
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d) What is the importance of hot spots to plate tectonics? (1 pt) Hot spots provide an absolute reference frame for plate tectonics. Hot spots are rooted deep in the mantle, and should not move as the plate moves over them. 2.
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This note was uploaded on 03/11/2010 for the course SIO sio 10 taught by Professor Beaver during the Winter '10 term at UCSD.

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homework2_ans - SIO 10 Winter 2010 Homework # 2 Due Friday,...

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