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CSIR UGC NET 2008 : EARTH SCIENCES - PAPER II

16 pages, 118 questions, 4 questions with responses, 4 total responses,

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EARTH, ATMOSPHERIC, OCEAN AND PLANETARY SCIENCES PAPER II 1. Draw a flow chart to find the square root of a positive number X correct to three decimal places by the method of bisection given that the square root lies between x1 and x2 (x2 < x1). (20 marks) 2. Palaeomagnetic pole positions of rocks of Plio-Pleistocene are plotted in the following figure. The position of the present day geomagnetic pole is also shown. (a) How does a palaeomagnetic pole differ from a virtual geomagnetic pole? (5 marks) (b) Why does the palaeomagnetic pole clustered in the figure around the geographic pole rather than the geomagnetic pole? (5 marks) (c) How do you locate the virtual geometric pole position from the Natural Remanent Magnetization of rocks? (10 marks) 3. Seismic waves inside the earth travel along curved paths. P and S waves disappear beyond an epicenter distance of 103 , but a phase of P wave gets recorded at 143 and thereafter. (a) (b) Why do seismic waves travel along curved paths inside the earth? (5 marks) Sketch and name the different phases of earthquake waves that can travel inside a homogeneous and isotropic earth.

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Additional Info : CSIR UGC (National Eligibility Test) NET New Exam Scheme December 2008 Model Question Paper - Earth Sciences Paper II Joint CSIR UGC NET Exam Question Papers
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