Exam2_S08b_KEY[1]

Exam2_S08b_KEY[1] - Geology 101 Spring 2008 Section 001...

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1 Geology 101 Spring 2008 Section 001 Name (print) ____KEY_____________ TEST #2 Version: B I. Multiple Choice. Read each question carefully and pick the BEST answer. Clearly mark your SCANTRON to indicate your choice. (90 questions; 1 pt each) 1. The Hawaiian Islands primarily represent _____ volcanoes. 1) shield 2) rhyolite 3) composite 4) resurgent dome 5) lahar 2. Weathering _____. 1) produces the source material for sedimentary rocks 2) results from uplift and exposure 3) can occur in place 4) produces soils 5) all of the above 3. A broad, shallow volcanic slope is likely created from lava with which of the following properties? 1) high silica content 2) high K, Al 3) typically forms rhyolites 4) high Mg, Fe, Ca 5) all of the above 4. Subducting and partially melting mafic oceanic crust produces _____. 1) ultramafic material 2) volcanoes like Mt St Helens 3) volcanoes like Hawaii 4) intraplate volcanism 5) all of the above 5. Differential erosion ______. 1) does not require transport of weathered material 2) results from compositional and textural differences in a rock 3) only occurs in sandstones 4) all of the above 5) none of the above 6. During the formation of a sedimentary rock, dewatering ____. 1) results from a decrease in pressure 2) results in melting 3) decreases the concentration of solutes (e.g., ions) in porewaters 4) increases the relative volume of a sediment body 5) none of the above
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2 7. Through _____, pyrite, an Fe 2+ sulfide, weathers, loses electrons, and ultimately forms minerals containing Fe 3+ . 1) hydrolysis 2) acid/base equilibria 3) dechlorination 4) oxidation 5) none of the above 8. Volcanoes associated with _______ plate boundaries form the ring of fire surrounding the Pacific basin. 1) convergent 2) divergent 3) transform 4) all of the above 9. Which sequence best describes the formation of a sedimentary rock? 1) transport, deposition, weathering, lithification 2) weathering, transport, deposition, lithification 3) deposition, transport, lithification, weathering 4) eruption, cooling, compaction, lithification 5) cooling, fractional crystallization, caldera collapse 10. When water is present in volcanic and igneous systems, ________ . 1) melting points are shifted to higher temperatures 2) pressure is no longer a factor for predicting melting points 3) steam generation can lead to explosive eruptions 4) all of the above 5) none of the above 11. The majority of the fatalities from the 1815 Tambora eruption were due to _____. 1) nuee ardents 2) famine and disease resulting from the affect on climate 3) pyroclastic flows and lahars along the flanks of the volcano 4) volcanic bombs 5) CO 2 asphyxiation (suffocation) 12. Which of the following is NOT a primary weathering agent on the Earth’s surface. 1)
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This note was uploaded on 05/15/2008 for the course GEOL 101 taught by Professor Kendall during the Fall '07 term at Clemson.

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Exam2_S08b_KEY[1] - Geology 101 Spring 2008 Section 001...

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