Geol201 wint05 quiz1 - A GEOLOGY 201 WINTER 2005 QUIZ...

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Unformatted text preview: A GEOLOGY 201 WINTER 2005 QUIZ l '1": 1: YOUR NAME Plcgse list the 6 steps of the scientific method needed to develop a theory. 6 POINTS! \\ ' ,1 1> azwts-P on '5 posed Q)“ 91”}; («Han maybe q MS.) yffidrl't'lor‘t +£J+€f \L, i»?>hbf°w$") ‘Lorw A K5) MOI) L0,” A THE REMAINING QUESTIONS ARE WORTH 4 POINTS EACH We all know and love Mica, which is a sheet silicate, because silica tetrahedrons in mica are arranged as sheets. How are silica tetrahedrons organized' in the mineral pyroxene? SmjLL 51min 5 i' (mic WW Please state the law of superposition. This question can be answered using a sketch and two words. I r- Qack MW 01C route «Love 4+4 PVQt/{DLAS mg. is Scurvy/- :A 1 44mm 1H,»:— prtviom 5 law and GUM ”Harm *M '4‘)?” about, 1+ 3“, About how long does it take for a fiber of chrysotile to dissolve in lung fluid? 1, W I l) The image on the screen depicts several different 6) Where is the ultralowfvelocity zone? examples of cleavage in minerals. Which of the _ following has the fewest directions of cleavage? At the core mantle boundary A b) At the mantle-crust boundary b) B c) At the lithosphere-asthenosphere boundary c) C d) At the inner core-outer core boundary d) D 7) What is the approximate age of the Earth? 2) What are the principal hazards associated with a a) 4550 years . . ., Volcano like Mt. Pinatubo. b) 4 55 million years a) Mudflows @ 4.55 billion years b) Pyroclastrc flows d) 45. 5 billion years Lava flows 611)) Both A and B ‘ 8) True or false: the eastern half of the North American Plate is beneath the Atlantic Ocean. 3) The effects of the Mt. Pinatubo eruption included: a) True a) More colorful sunsets all around the earth 9). False b) Cooling of global climate Which of the following can cause low- -lying margins of c Warming of global climate continental plates to rise? @ Both A and B a) Isostatic adjustment 4) Which of the followrng fibers is least likely to cause b) Tectonic forces health problems: . Solar tide pull a) The glass fibers of fiberglass used to make surfboards and used as substitute for asbestos in GE Both a and b building insulation. 10) Which of the following play a role in the decay of 23"U to 206Pb? b) “Blue” asbestos (a chain silicate, amphibole mineral) a) Alpha decay c) Erown asbestos (a charn srlrcate, amphibole b)) Beta decay mineral) “White asbestos” ( a sheet silicate, serpentine Electron capture mineral) (d )) Both a and b. 5) The P-wave shadow zone occurs because: 11) True or False: the half lives of radioactive isotopes do not vary beyond statistical expectations. a) P waves do not pass through fluids. (' a) ) True P waves are bent when they pass through the core. b) False c) Earthquakes send waves in only one direction. d) Our instruments can only detect very strong P waves. 1 white GEOLOGY 201 WINTER 2005 QUIZ 1 12) Which of the following statements is true? a) According to some studies, Americans are more likely to die in an automobile accident than from cancer caused by exposure to asbestos. b) According to some studies, Americans are more likely to die from lightning strike than from cancer caused by exposure to asbestos. c) The cancer rate among Canadians living adjacent to the waste piles of the worlds largest asbestos mine is no higher than that of all other Canadians. "\ < d) / All of the above statements are true 13) Which of the following is a sheet silicate? a) Feldspar b) Amphibole c) Olivine C (1)“? montmorillonite 14) Which of the following has an isolated silicate structure? a) Feldspar b Amphibole Olivine d) Mica 15) Which of the following is a features are associated with of convergent plate boundaries? a) subduction zone b) narrow, very deep, linear trenches c) metamorphic rocks ® all of the above 16) What are the two most abundant elements in the Earth’s a Silicon and oxygen b) 1r0n and calcium c) Aluminum and iron d) Carbon and oxygen 17) Which of the following is the hardest mineral? a) Quartz b) Talc «WED Corundum d) Calcite 18) Which of the following is true about the thickness of the Earth's crust relative to the rest of the Earth? a) It is like the rind of a watermelon, in that it is relatively thick compared to the rest of the Earth. b) It encompasses the majority of the Earth. em / c) . It is insignificant compared to the rest of the earth. d) Both a and b 2 white YOUR NAME_ 7 .n __=__ 19) Which of the following is true about the mantle? a) It is solid but flows slowly b) The upper part of the mantle is part of the lithosphere c) Below the lithosphere the mantle is soft and flows MK more readily than the rest of the mantle / d \ ll of the ve J A abo 20) What is the source of ENERGY that drives erosion? a) Gravity b) Heat inside theearth (—39 Solar energy ) Both a and b 21) Why do soils rich in montmorillonite clay minerals swell when they are wet? a) Large pores spaces in the soil fill with water. b) The relatively large clay particles are readily displaced by water. Water molecules get into the area between silicate layers of the montmorillonite crystal structure. (1) Both b and C 22) How long has complex life existed on Earth? a) 5,400 years 544 thousand years @ 544 million years ) 544 billion years 23) What events coincide with the extinctions of dinosaurs? a) Asteroid impact Large lava floods. Widespread subduction of oceanic lithosphere a): wBomaandb 24) Which of the following best describes mammals that existed on Earth during the Cretaceous? a) Cretaceous-time mammals included a variety of predators and herbivores that dominated most ecosystems. @ Cretaceous-time mammals were inconsequential, rat-sized beasts. c) Cretaceous-time mammals lived mostly in the oceans d) Most Cretaceous-time mammals where large herbivores that were prey for dinosaurs. 25) The P-wave shadow zone occurs because: a) P waves do not pass through fluids. (:5) P waves are bent when they pass through the core. c) Earthquakes send waves in only one direction. d) Our instruments can only detect very strong P waves. ...
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