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MarBiolEXAM1FALL2009_Test_A[1] - MARINE BIOLOGY First exam...

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MARINE BIOLOGY First exam, Fall 2009 NAME:______________________________ A 1. Sediments in sea floor regions near a mid-ocean ridge are than those far from mid-ocean ridges: a) younger b) thicker c) older d) thinner e) a and d 2. Oceanic crust is composed of , whereas makes up most of the continental crust. a) felsite, quartz b) granite, basalt c) basalt, felsite d) basalt, granite e) None of the above 3. Open ocean regions over continental shelves are termed: a) oceanic b) planktonic c) neritic d) pelagic e) benthic 4. Lithogenous sediments in the ocean arise due to: a) wind-blown desert dust b) weathering of rocks c) river transport d) None of the above e) All of the above 5. Biogenic sediments come mainly from: a) Runoff of terrestrial plant material b) Plankton c) Decomposing whale carcasses d) Wind-blown desert dust e) None of the above 6. Characteristics of a passive continental margin include: a) Large continental shelves b) Trench formation c) High geological activity d) Plate boundaries e) None of the above 7. The stratification of the Earth’s layers, and which plate ends up on top at a subduction zone, depend directly on this characteristic of the materials involved: a) Temperature b) Speed of convection c) Coloration d) Mineral type e) Density 8. The Richter Scale rates earthquakes based on the of the of the quake, meaning each whole number interval represents a -fold increase in the “size” of the quake. a) Logarithm, frequency, 10 b) Amplitude, timing, 100 c) Logarithm, amplitude, 10 d) Exponential, amplitude, 100 e) Frequency, shudder, 2 9. “Hot spots”:a) Are warm water pockets in areas with a permanent thermocline b) Are areas where magma has pushed through the lithosphere c) Can form new island chains d) a and b e) b and c 10. A guyot is: a) A submarine canyon b) An area of high earthquake risk c) A migratory coastal bird d) A flat-topped seamount e) None of the above
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11. Monterey Canyon was formed by: a) An underwater landslide b) A river during a period of lower sea-level c) Strong river-mouth currents d) A strong earthquake e) None of the above 12. Water is an excellent solvent because it: a) Is a polar molecule b) Forms hydrogen bonds c) Has high surface tension d) All of the above e) None of the above 13. The “latent heat of melting or of vaporization” is the: a)
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MarBiolEXAM1FALL2009_Test_A[1] - MARINE BIOLOGY First exam...

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