Physical Geology

Physical Geology

Test 1

21 Sept 2001

  1. Which of the following is not an example of the scientific method being applied? (a) attributing AIDS to the wrath of God for punishment of immoral behavior (b) developing a hypothesis about AIDS being caused by the HIV virus (c) experimenting with monkeys to see if infecting them with the HIV virus leads to AIDS (d) gathering statistics about the spread of AIDS among various demographic groups
  2. Which of the following is an example of catastrophism? (a) an impact by a meteorite or comet destroying the dinosaurs (b) Noah's flood destroying most of life on Earth (c) the eruption of Mt. St. Helens. (d) The 1907 San Francisco Earthquake
  3. Which of the following did not happen during the iron catastrophe. (a) A large meteorite impacted the Earth's surface, releasing large amount of mafic lava. (b) As the Earth heated soon after reaching its present size, it reached the melting point of iron. (c) Because of the high density of iron, as it melted, it was pulled toward the center of the Earth. (d) Lighter materials, such as silicon and oxygen, rose closer to the surface of the Earth, like scum on a boiling pot. (e) Some of the gases trapped in the interior of the Earth escaped, some of which combined to form the water of the oceans.
  4. Which of the following layers of the Earth is most brittle? (a) asthenosphere (b) inner core (c) lithosphere (d) mantle
  5. Which of the following rock types forms from preexisting rock that is squeezed under high pressure but not melted? (a) igneous (b) metamorphic (c) sedimentary
  6. When two continental plates collide, which of the following is formed? (a) mountains (b) spreading center (c) subduction zone (d) transform fault
  7. When an oceanic plate and a continental plate collide, which of the following is formed? (a) mountains (b) spreading center (c) subduction zone (d) transform fault
  8. The model presently used to explain the movement of lithospheric plates includes all of the following except (a) convection cells (b) mid-oceanic spreading centers (c) rotation of the Earth (d) the asthenosphere
  9. What did UNO possess, originally the property of PEMEX, whose analysis helped explain the death of the dinosaurs? (a) fragments of dinosaur bones (b) a Mexican geologist (c) pieces of a meteorite (d) rock cores from oil wells drilled in the Yucatan Peninsula
  10. Which of the following is most important in determining the type of bonding between atoms? (a) electron (b) neutron (c) proton (d) quark
  11. The number of which of the following determines which element an atom represents? (a) electrons (b) neutrons (c) protons (d) quarks
  12. Diamond, made from pure carbon, has which of the following types of bonds? (a) covalent (b) intermolecular (c) ionic (d) metallic
  13. Silicates are the most common minerals in the Earth's crust because (a) silicates are less dense than other minerals (b) silicates are released from mid-oceanic spreading centers (c) silicates cover most of the oceans' bottoms. (d) silicon and oxygen are the most common elements in the crust
  14. Caves usually form in carbonate rocks because (a) carbonate rocks are mined to make drywall (sheetrock). (b) carbonate rocks are less dense than other rocks (c) carbonate rocks are more permeable than other rocks, allowing water to move through them (d) rainwater is naturally slightly acidic and dissolves the carbonate rock
  15. Graphite flakes off your pencil lead because (a) covalent bonds break between carbon atoms (b) graphite is less dense than diamond (c) rubbing the graphite on the paper oxidizes the carbon (d) weak intermolecular bonds break between sheets of carbon
  16. If magma is cooling and silicate minerals begin to crystallize, minerals containing which of the following crystallizes first? (a) independent silica-oxygen tetrahedra (b) single chains of silica-oxygen tetrahedra (c) double chains of silica-oxygen tetrahedra (d) sheets of silica-oxygen tetrahedra (e) frameworks of silica-oxygen tetrahedra
  17. If you were walking on a nice, sandy, white beach, the sand would most likely be made from minerals containing which of the following? (a) independent silica-oxygen tetrahedra (b) single chains of silica-oxygen tetrahedra (c) double chains of silica-oxygen tetrahedra (d) sheets of silica-oxygen tetrahedra (e) frameworks of silica-oxygen tetrahedra
  18. Which of the following is not a native element? (a) copper (b) gold (c) platinum (d) quartz
  19. Which of the following is not an extrusive rock? (a) andesite (b) basalt (c) gypsum (d) rhyolite
  20. Which of the following is a mafic rock? (a) andesite (b) basalt (c) gypsum (d) rhyolite
  21. Which of the following forms from magma with the highest viscosity? (a) andesite (b) basalt (c) gypsum (d) rhyolite
  22. Which of the following crystallizes from the hottest magma? (a) andesite (b) basalt (c) gypsum (d) rhyolite
  23. Which of the following is likely to be the darkest color? (a) andesite (b) basalt (c) gypsum (d) rhyolite
  24. Which of the following is most likely to come from a volcanic eruption in Hawaii? (a) andesite (b) basalt (c) gypsum (d) rhyolite
  25. Which of the following is most likely to form stratovolcanoes near subduction zones? (a) andesite (b) basalt (c) gypsum (d) rhyolite
  26. In a very violent eruption, such as at Yellowstone, which of the following is most likely to be produced? (a) andesite (b) basalt (c) gypsum (d) rhyolite
  27. When an oceanic plate collides with a continental plate, which of the following is not true? (a) earthquakes may result (b) folding results in the uplift of mountains (c) the leading edge of the oceanic plate is pushed downward to the point of melting (d) the oceanic plate is subducted under the continental plate (e) volcanoes form on the continent side of the point of collision
  28. Which of the following does not contribute to the formation of magma? (a) decay of radioactive isotopes (b) pressure (c) solar energy (d) water
  29. If magma is cooled from 1500 degrees C to 1000 degrees C, some minerals will crystallize. The magma that remains will be (a) more felsic than the original magma (b) more mafic than the original magma. (c) the same as the original magma
  30. A small, tabular pluton that cuts across existing rocks is called a (a) dike (b) lapolith (c) sill (d) xenolith (e) none of the above
  31. At which of the following locations is a basalt least likely to be formed? (a) oceanic hot spot, such as Hawaii (b) continental hot spot, such as Yellowstone (c) mid-oceanic spreading center (d) rift zone, such as in East Africa
  32. The explosivity of a volcano depends primarily on which of the following? (a) gas content (b) viscosity (c) both a and b (d) neither a nor b
  33. At Mt. St. Helens, which of the following did not occur? (a) bulging of the surface of the volcano (b) a geologist was killed (c) a large lake was formed when the caldera collapsed (d) small-scale tremors
  34. In which of the following famous battles, did the orientation of dikes and sills help decide the outcome of the battle ? (a) The Battle of the Bulge (b) Gettysburg (c) Guilford Courthouse (d) Pearl Harbor


    True/False: Put A for True and B for False



  35. James Hutton developed the theory of plate tectonics.
  36. The planets closest to the Sun are densest.
  37. The asthenosphere is located in the upper mantle.
  38. To a geologist, relative dating has nothing to do with having a cute cousin.
  39. The most common rock on the Earth's surface is basalt.
  40. The difference in crystal size between intrusive and extrusive rocks is due to their silica content.
  41. Plate tectonics is commonly used to explain the location of volcanoes on the Moon.
  42. Shield volcanoes are formed from andesite.
  43. Crater Lake in Oregon formed when a volcano collapsed inward.
  44. On the slopes of volcanoes are often formed rich soils.

    From the slides: We will view slides together in class. The following questions are based on these slides.



  45. In the slide shown, the rock is (a) felsic and extrusive (b) felsic and intrusive (c) mafic and extrusive (d) mafic and intrusive
  46. The large depression shown in the slide is due to (a) continental rifting (b) a glacier (c) subsidence (d) wind
  47. The rocks in the slide shown are (a) andesite (b) basalt (c) granite (d) gypsum
  48. The hot spring shown is due to (a) heat from chemical reactions in the groundwater (b) hot rock near the Earth's surface (c) a leaking pipe (d) a meteorite impact
  49. The feature that I will point to in the slide represents all of the following except (a) formation of new oceanic crust (b) a new spreading center (c) rifting (d) a subduction zone
  50. The feature that I will point to in the slide is (a) a continent-continent collision (b) a mid-oceanic spreading center (c) a subduction zone (d) a transform fault boundary




File translated from TEX by TTH, version 3.01.
On 24 Sep 2001, 07:41.
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