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UNDERSTANDING PLANET EARTHEPSC-201MID-TERM TESTDATE:30thOctober, 2006.NAME:STUDENT #:INSTRUCTIONS:Answerten(10) questions in the spaces provided.Provide sketcheswhere appropriate.All questions are weighted equally.1)How do stars form and how do they evolve in the end stages of life? What governs this evolution?2)Why is the composition of the Earth dominated by metallic iron and olivine (Fe,Mg)2SiO4, whereas Jupiter is composed mainly of water and ammonia?3)What are P waves and S waves and how are they used to locate Earthquakes?
4)Provide two lines of seismic evidence that the outer core of the Earth is liquid?5)Provide three lines of evidence that Pangea existed.