Earth Science Exam #2 The Ocean

55 Questions  I  By Hcarmikel on May 20, 2012
Test on Ocean Sediments, Ocean Floor, El Nino and La Nina

  
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1.  How do calcareous oozes form?
A.
B.
C.
D.
2.  Which one of the following salts is most abundant in seawater?
A.
B.
C.
D.
3.  The crests of mid-oceanic ridges ________.
A.
B.
C.
D.
4.  Submarine canyons form the deepest parts of the ocean basins.
A.
B.
5.  Biogenous sediments are indicated by the number(s):
A.
B.
C.
D.
6.  ________ abyssal plain clay
A.
B.
C.
7.  Compared to the Southern Hemisphere, a higher percentage of the Northern Hemisphere is water covered.
A.
B.
8.  Turbidites and siliceous oozes are both biogenous sediments.
A.
B.
9.  Which one of the following concerning mid-ocean ridges is false?
A.
B.
C.
D.
10.  Submerged, flat-topped seamounts are known as guyots.
A.
B.
11.  Which of the following contains silica (SiO2)?
A.
B.
C.
D.
E.
12.  The continental rise is located ________.
A.
B.
C.
D.
13.  The continental rise lies at the bottom of the continental slope.
A.
B.
14.  The Atlantic and Pacific basins have oceanic ridges; the Indian Ocean has no oceanic ridge
A.
B.
15.  The element found in some sediments which suggest that a meteorite or asteroid impact occurred nearby is:
A.
B.
C.
D.
16.  High energy environments are most likely to contain which one of the following?
A.
B.
C.
D.
E.
17.  Seafloor hot springs occur mainly in oceanic, abyssal plains.
A.
B.
18.  It is thought that submarine canyons on the continental slope have been generated by ________
A.
B.
C.
D.
19.  ________ turbidite deposits
A.
B.
C.
20.  ________ develop where oceanic lithosphere bends downward and sinks into the mantle.
A.
B.
C.
D.
21.  Which one of the following would you NOT associate with turbidity currents?
A.
B.
C.
D.
22.  An echo sounder operates by measuring the time required for a ________.
A.
B.
C.
D.
23.  The sediments that are produced in areas of high primary productivity are indicated by the number(s):
A.
B.
C.
D.
24.  ________ quartz sand
A.
B.
C.
25.  The BEST definition of the outer edge of the continental shelf is that point where ________.
A.
B.
C.
D.
26.  The major force bringing continental sediments to the open ocean is (are): .
A.
B.
C.
D.
E.
27.  Submarine canyons found on the continental slope and are believed to have been created ________.
A.
B.
C.
D.
28.  Manganese nodules do not accumulate below 4500 meters depth because the manganese minerals are highly soluble in seawater below that depth.
A.
B.
29.  ________ diatom ooze
A.
B.
C.
30.  "Black smokers" are associated with ________.
A.
B.
C.
D.
31.  ________ manganese nodule
A.
B.
C.
32.  Calcareous oozes are represented by the number(s);
A.
B.
C.
D.
33.  Calcium carbonate is most likely to dissolve in water with which characteristics?
A.
B.
C.
D.
E.
34.  Sediments that are derived primarily from the weathering on continental material are indicated by the number(s):
A.
B.
C.
D.
35.  ________ calcareous ooze
A.
B.
C.
36.  Which ocean has the greatest average depth?
A.
B.
C.
D.
37.  Sand, silt, and clays deposited on the ocean floor are described as terrigenous sediments
A.
B.
38.  A very important way to increase the settling rate of fine particles in the open ocean is via: .
A.
B.
C.
D.
E.
39.  Which of the following is associated with ocean ridges?
A.
B.
C.
D.
40.  The ________ Ocean is largest
A.
B.
C.
D.
41.  A pelagic clay contains lots of material that settles to the seafloor through the water column and are:
A.
B.
C.
D.
E.
42.  Sediments which are poorly sorted and made of a variety of minerals could have been deposited by: . .
A.
B.
C.
D.
E.
43.  Which of the following contains calcium carbonate (CaCO3)?
A.
B.
C.
D.
E.
44.  Which one of the following is NOT part of the continental margin?
A.
B.
C.
D.
45.  Which of the following is not an important control on oceanic sediment accumulation?
A.
B.
C.
D.
E.
46.  The ________ marks the transition between the warm surface layer and the deep zone of cold water in the oceans.
A.
B.
C.
D.
47.  Which of the following is NOT true of deep ocean trenches?
A.
B.
C.
D.
48.  The most likely place to find abundant manganese nodules is on the:
A.
B.
C.
D.
E.
49.  Concerning the distribution of land and water, which of the following statements is true?
A.
B.
C.
D.
50.  The oceans cover approximately ________ percent of Earth's surface.  
A.
B.
C.
D.
51.  Seamounts ________.
A.
B.
C.
D.
52.  Minerals that crystallize directly from seawater are examples of ________.
A.
B.
C.
D.
53.  The gently sloping submerged surface extending from the shoreline toward the deep ocean is termed the ________.
A.
B.
C.
D.
54.  The surface waters in regions where evaporation rates are high, such as the Red Sea, have higher than average salinities
A.
B.
55.  The ________ Ocean has more extensive abyssal plains than the Pacific Ocean because it has fewer trenches to trap sediments moving down the continental slope.
A.
B.
C.
D.
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