Annamalai University 2008-1st Year M.Sc Geo-Informatics " 110INTRODUCTION TO EARTH SCIENCES " ( New Regulations ) code 1741 - Question Paper
Register Number:
Name of the Candidate :
Register Number:
17 4 1 M.Sc. DEGREE EXAMINATION, 2008
( GEO-INFORMATICS)
(FIRST YEAR)
(PAPER -1)
110. INTRODUCTION TO EARTH SCIENCES - I
( New Regulations )
May ] [ Time : 3 Hours
Maximum : 100 Marks
Answer ALL questions.
Each answer should be in about 1,500 words. All questions carry equal marks.
Register Number:
(5 x 20 = 100)
1. (a) How is the constant rate of decay of radio active isotopes used to determine the absolute age of earth.
(b) Give a succinct account of continental drift and plate tectonics.
2. (a) Write an essay on Earths heat budget and
global climate changes.
(OR)
(b) Describe three ways in which a stream might erode its channel. Add a note on drainage patterns.
3. (a) What are folds ? Describe different types
of folds with neat sketches.
(OR)
(b) Describe various symmetry elements of a crystal. Explain the Miller System of notation.
4. (a) Give an account of silicate structures.
(OR)
(i) Retardation.
(ii) Birefringence.
(iii) Pleochroism.
(iv) Extinction angle.
5. (a) Describe the physical, chemical and optical characters of pyroxene group of minerals.
(OR)
(b) Describe the physical, chemical and optical characters of mica group of minerals.
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