geos test 1 sinah

geos test 1 sinah - QUIZ 1, Spring 2008, Geology 1004...

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Unformatted text preview: QUIZ 1, Spring 2008, Geology 1004 Please keep this exam ; enter id and name Grades will be on Blackboard by 12 February I Silicate family of minerals are pet-tally- f rmed by evaporation of seatifatcr. l. TRUE k1,.» FALSE 2. How many pounds in every kilogram (i) 10 4'31???) (3) 100 o A platonic igneous rock inade up of high temperature minerals of Bowen reaction Series is (I) granite (2) dioritggabbro 6 5'4, Geothermal gradient relates increase in temperature to depth. (1;) TRUE _ 2. FALSE / 5. .T N rcssure at the center of the earth would be approximately 2200 lib. ~ I. TRUE 2. FALSE IE 11 PARTS BY VOLUME OF A 50% SIOZ MAGMA WERE TO BE COMPLETELY MIXED WITH 2 PARTS BY VOLUME OF 70% SIOZ MAGMA3 THE MIXED MAGMA WOULD HAVE WHICH OF THE FOLLOWING SIOZ (%) CONTENT? (1) 50%; (2} 69%;{3} 530/7; (4) 55% 7. Radius ofeartli is (1) 100m (2)1000km :3) 8. Assume that water-poor granite will melt at a temperature of 850”C under a wide range of pressures. If the geothermal gradient in a particular area was 25 “C per kilometer, What is the MINIMUM depth at which granite would begin to melt? ~ (I) 15,000 km; (2) 24 km; (3) 20 km; 4) 34 km' (5) 30 km; none ofthe above. 9 If‘oasalt with a melting temperature of 1200°C begins to melt at aldEpth of 30 km, then the geothermal gradient in that area is approximately: : (l) 24”C per km; (2) 30°C per km; (3) 34°C per km; (4) 20°C per km;- 5) 40”C per km (6) none ofthe above. ' 10. The first six elements of the Periodic Table are: He, Li. Ee> B, C; (2) H, Li, Na, K, Rb; (3) H, Fe. Sig Ni, Ca, Al. 1 l Assuming a geothermal gradient of 20°kamj the temperature at the center of the earth would be: f9127gorrc; (2) 4000C, (3) 58,000°C. QUESTION POSSIBLE CHOICES (use only once) 12 reaction pair Ll number of protons _ 13. isotope ‘5; number of electrons gained-lost l4. atomic number an mineral with silicon and oxygen ;5 .. <3 . hamphibole—biotite LUJMt—I 16 quartz 6 - 5.7 variable numbers of neutrons (same#protons) l7 orderly arrangement of atoms 7 5. oxygen 18. mineral '31 7. space lattice l9 valency 2,7; 7 8. High temp. mineral in Bowen Reaction Series 20 most abundant element for whole earth 97. naturally—occurring compound 10. Atomic weight 22. Is it true that an atom is the smallest possible particle of an element that retains the properties of that element? (.l-j'TRUE} (2) FALSE 23. Stable elements normally do not react with other elements. A common stable element is: (l) helium; (2) chlorine; (3) sodium 24. Dissimilarities in abundances of elements between the sun and the earth's crust suggest that (l) the earth is unrelated to all other planetsjstars; (2) the earth is older than the sun; (Wily 25. Bragg‘s law is used to calculate interatomic distances in minerals. A common form of the expression used is: y . nk _ g ‘ ._ (1) nestme 2)Sin0 —3i (3)117k’SlDed 26. Following Bowen Reaction Series, would olivine commonly occur with quaMz? 3 (l) ‘ Yes, it is a common occurrence. (2);? 7"No, it is unlikely. (Use only once) Question 1. ELEMENT wrrH ONE PROTON 27 ZERO DEGREE CENTIGRADE '5 2. 5 1m 23 PALEONTOLOGY ‘3 W- 29 MINERALOOY Q 4. WENT 30. DEPTH AND TEMPERATURE RELATIONSHIP Ll 31 LAST MINERAL TO FORM IN BOWEN REACTION SERIES 7. Mch 32 510203144024) «6 s fiWC—BBGQWD 33 1.8 MILES la --9:’"S‘I'UWIVI'FNERALS l0. 3 KM 34. HOW MANY ATOMS (AVERAGE DrAMETER OF 10*8 CM) CAN OCCUR TN 1 CUBIC CM? ( A CUBE THAT is 1 CM ON EACH SIDE (1 CM X 1 CM X1CM). (1) tall- ATOM “(2‘) 108 ATOMs (3) 10100 ATOMs .A y... 35 .How far in miles does light travel in l second;*(l) 186282.397 miles 10 miles (3) 1000 miles THE BASIC BUILDlNG BLQQK ( MOLECULE) FOR SILICATE FAMILY OF MINERALS IS (1) GABON DIOXIDE‘WILICATE TETRAHEDRON (3) OLIVINE 36 37 ELEMENT SUB STITUTION MINERALS REQUIRES THAT THE ELEMENTS BE APPROXIMATELY SIMILAR SIZE (' (2) FALSE ,4 a? 38 The concept of free energy is related to (1) presence of anions (2) presence of anemia-Energy like property Of a system in thermodynamic equilibrium (4) chemical make up of the earth 39. The volume (V = 4f3 fix Radiusg ) Of Planet earth in cubic meters is ;/(l) “$097,509,500,000,000,000,000 (2) 6370 (3) 1,000,000,000 (4) 5000 40. HOW many axes of four fold symmetry (similar face appears tpman Observer when cube is rotated 360 degrees) can be recognized in a cube? (1) 2 (2) 100 ,/" 1x.) ,7 The following {lime question are related to the diagram glvan below ( Ab : Albite ) 41. The composition ofpoim labeled L (lo liquid field) is (1) (2) A1210 (3) Ab 90 42. lftlle liquid ( labeled pong; were to cool slowly, the first solid to form would film an approximate composition of (lg-AB}; )Ab lO (3) Ala 80 a composition ofthe solid would be 43. If the llfluid ( Labeled point L) were to become 100 pmcgflt SOlidi th .371) Allow (2) Ab 100 (3) Ab lo 6 C) .55 Comfosfilwfl 3 ill: «4w 8'0 Too am 30 20 lo n U) ...
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This note was uploaded on 05/04/2008 for the course GEOS 1004 taught by Professor Aksinha during the Spring '08 term at Virginia Tech.

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geos test 1 sinah - QUIZ 1, Spring 2008, Geology 1004...

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