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homework1_ans - SIO 1 0 - Winter 2009 Homework 1 Due...

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SIO 10 - Winter 2009 Homework 1 Due Friday, January 16 Chapters 1, 2, 3 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) Contrast the geocentric and the heliocentric models of the Universe (2 pts). b) How old is the Earth (1 pt)? a) The geocentric model places the earth at the center of the Universe, and other bodies made perfect circular orbits around the earth (1pt) . Alternatively, the heliocentric model places our sun at the center, and all bodies (including Earth) orbit about the sun (1pt) . b) 4.56 billion yrs (1 pt) 2. a) What drives the Earth’s magnetic field (2 pts)? b) Sketch the magnetic field lines around the Earth (2pts). c) What is the benefit of the geomagnetic field to life on Earth (1pt)? a) The geomagnetic field is driven by the convective motions of iron particles in the liquid
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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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homework1_ans - SIO 1 0 - Winter 2009 Homework 1 Due...

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