Geology 117: The Oceans
Self-Administered Quizzes
- Quiz No. 3 -- Covers topics 11-15
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- 1. Hydrogenous sediments of the deep-sea floor (e.g., manganese
nodules) predominate
- A. in regions where the input from other sediment sources
is reduced.
- B. in regions where sediment input from the continents is
greatest
- C. in the shallowest parts of the ocean only
- D. in the deepest oceans trenches only
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- 2. Calcareous oozes of the open ocean are
- A. created in deep water and dissolve in shallow water
- B. more common in deep abyssal plain sediments than on continental
shelves
- C. more common on mid-ocean ridge systems than on the deep-ocean
basin floor.
- D. very rare, and can only be observed with deep submersible
vehicles
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- 3. Particles of a poorly-sorted sediment
- A. are all within a limited size range.
- B. are of a wide variety of sizes
- C. are always composed of the same material
- D. are not cemented together strongly
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- 4. Siliceous oozes are examples of
- A. biogenous sediments
- B. lithotrophic sediments
- C. volcanic emanations
- D. terrigenous sediments.
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- 5. The structure of the water molecule
- A. has the hydrogens directly opposite each other, bonded
to an oxygen in the middle
- B. has the hydrogens bonded to each other, and the oxygen
bonded to only one of the hydrogens
- C. has the hydrogens both bonded to an oxygen in the middle,
but not directly opposite each other
- D. None of the above
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- 6. The amount of energy needed to vaporize one gram of water
at 100 deg C
- A. is quite large compared to most liquids
- B. is quite small compared to most liquids
- C. is small because of the large amount of salt that is found
in it
- D. is about average among liquids
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- 7. In any natural body of water
- A. the density of all layers must be equal.
- B. the densest water moves to the top
- C. the least dense water moves to the top
- D. the densest water becomes colder
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- 8. Lithogenous sediment is
- A. derived from rock.
- B. derived from plants and animals.
- C. always found at depths over 4,500 meters.
- D. always associated with deep-sea trenches
- E. a product of precipitation from sea water.
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- 9. The particle size of terrigenous sediments generally _______
with distance from shore.
- A. increases
- B. decreases
- C. remains constant
- D. becomes less uniform
- E. is less graded
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- 10. Manganese nodule mining has not developed because of
- A. low international market prices for metals.
- B. unresolved legal ownership problems.
- C. technical and developmental costs.
- D. All of these are correct.
- E. None of these are correct
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- 11. The type of chemical bond that attracts H2O
molecules to one another in water and ice is called:
- A. covalent bonds
- B. ionic bonds
- C. hydrogen bonds
- D. oxygen bonds
- E. savings bonds
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- 12. Which of the following are important features about the
changes of state of H2O at the Earth's
surface?
- A. Condensation of water vapor is the most important source
of heating the atmosphere.
- B. Evaporation of surface sea water drives the hydrologic
cycle.
- C. Energy absorbed and released during changes of state increase
the seasonal variations of temperature in surface ocean water.
- D. A and B
- E. A, B, and C
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- 13. Because of its surface temperature (18 deg C) Earth radiates
energy to space in the ________ part of the electromagnetic spectrum.
- A. microwave
- B. infrared
- C. visible
- D. ultraviolet
- E. X-ray
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- 14. On a global average, ____ % of incoming solar radiation
is reflected and ____ % is absorbed.
- A. 95; 5
- B. 65; 35
- C. 50; 50
- D. 35; 65
- E. 5; 95
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- Answers: 1=A, 2=C, 3=B, 4=A, 5=C, 6=A, 7=C, 8=A, 9=B, 10=D,
11=C, 12=D, 13=B, 14=D