Oceanography Practice Midterm Exam II
Water, Ocean Chemistry, Atmospheric and
Ocean Circulation
Please Note: 1) The actual midterm will
consist of approximately 70 questions.
2) Some of the questions on the midterm
will come from this practice test.
Section I. True or False
Answer true or false to the following questions or
statements. Mark "a" for
True and "b" for
false on your Scantron sheet.
____1. Increasing heat is an object's response to
an increase in temperature.
a. |
True |
b. |
False |
____2. The ocean tends to become more dense with increasing depth:
a. |
True |
b. |
False |
____3. It is possible for two samples of water to
have the same density at different combinations of temperature and salinity.
a. |
true |
b. |
false. |
____4. An air mass is a large body of air with
nearly uniform temperature, humidity, and therefore density throughout.
a. |
true. |
b. |
false. |
____5. Tropical cyclones never leave the tropics.
a. |
true. |
b. |
false. |
____6. The amount of seawater water flowing in
the geostrophic currents of the world ocean is
approximately equal to the total amount of water flowing in all the Earth's
fresh water rivers.
a. |
true. |
b. |
false. |
____7 Deep
current are horizontal and rarely move vertically.
a. |
true. |
b. |
false. |
____8. The thermohaline
circulation system is a fancy term for geostrophic
gyres.
a. |
true |
b. |
false |
____9. Ocean circulation transports most of
Earth’s sun-derived, low-latitude, surface heat to the poles.
a. |
true |
b. |
false |
____10. Western boundary currents typically are
deep and swift, and have well-defined edges and eddies.
a. |
true. |
b. |
false. |
____11. The ocean’s geostrophic
gyres are primarily driven by density differences of seawater masses.
a. |
true |
b. |
false |
____12. Atmosphere circulation transports one third
of Earth’s sun-derived, low-latitude, surface heat to the poles.
a. |
true |
b. |
false |
____13. Eastern boundary currents typically are
warm and narrow, and have poorly-defined edges and eddies.
a. |
true. |
b. |
false. |
____14. Atmospheric circulation transports close to
two thirds of Earth’s sun-derived, low-latitude, surface heat to the poles.
a. |
true |
b. |
false |
____15. Western boundary currents typically are
deep and swift, and have well-defined edges and eddies.
a. |
true. |
b. |
false. |
____16. The bond
between a hydrogen atom and the oxygen atom within
a single water molecule is termed a hydrogen bond.
a. |
true |
b. |
false |
____17. The unique thermal properties
of water is attributed to a type of bonding called “hydrogen bonding”.
a. |
true |
b. |
false |
____18. The pycnocline is
specifically defined as a horizontal zone in the ocean that marks a
sharp change in seawaterdensity.
a. |
true. |
b. |
false. |
____19. Blue and green wavelengths of sunlight are
more greatly absorbed than red and orange wavelength sunlight as they travel
through seawater.
a. |
true |
b. |
false |
____20. The minimum
sound velocity layer (the sofar layer) in the
ocean lies only several meters beneath the ocean’s surface.
a. |
true. |
b. |
false. |
Section II. Multiple Choice:
Identify the letter of the choice that best completes the
statement or
answers the question.
____21. The hydrogen bonds of water molecules
account for which of the following?
a. |
Water
is the universal solvent. |
b. |
Water
has a high surface tension. |
c. |
Water
has a high boiling point. |
d. |
Water
has a high heat capacity. |
e. |
All
of these are relevant. |
____22. The property of water that allows certain
insects to walk on the surface is called
a. |
viscosity. |
b. |
density. |
c. |
surface
tension |
d. |
latent heat of
fusion. |
e. |
latent heat of
evaporation. |
____23. The ocean is slow to heat and slow to cool.
This is related to a property of water known as
a. |
density. |
b. |
high heat
capacity. |
c. |
low heat
capacity. |
d. |
residence time. |
e. |
boiling point. |
____24. The transmission of sound by water can best
be described by which of the following statement:
a. |
It
is inefficient as compared with transmission by air. |
b. |
It
is the same as by air. |
c. |
Sound
does not travel in water - a property known as incompressibility. |
d. |
It
is more efficient than transmission by air. |
____25. The ocean is stratified with respect to
a. |
density |
b. |
temperature |
c. |
salinity |
d. |
all
of the above |
____26. Most of the world ocean (by volume) has the
temperature properties of
a. |
the mixed surface
layer. |
b. |
the middle thermocline layer. |
c. |
the deep and
bottom waters layer. |
d. |
the compensation
depth. |
____27. The density of a parcel of seawater will
increase
a. |
when the
temperature increases. |
b. |
when the salinity
decreases. |
c. |
when the salinity
increases. |
d. |
when the pressure
decreases. |
e. |
when it is
exposed to high ambient sound levels. |
____28. The property of water that accounts for the
ability of liquid water to absorb heat and change only very little in
temperature is called:
a. |
Specific
heat, or heat capacity. |
b. |
Specific
heat of evaporation. |
c. |
Specific
heat of fusion. |
d. |
Freezing
coefficient. |
e. |
Dielectric
constant. |
____29. If our planet were without its ocean, but
otherwise the same as it is today, would surface temperatures be more
extreme than they are now (that is, higher high temperatures in summer, and
lower low temperatures in winter), of less extreme, or what?
a. |
more extreme. |
b. |
less extreme. |
c. |
about the same as
we know today. |
d. |
impossible to
tell without more information. |
____30. The ocean's deep sound channel (sofar layer) is characterized as a zone in which:
a. |
sound is
horizontally concentrated rather than diffused as it moves through the water. |
b. |
acoustical energy
losses are relatively small. |
c. |
sound waves
travel great horizontal distances. |
d. |
sound velocity is
at a minimum. |
e. |
(All
of these statements apply.) |
____31. The depth to which light can penetrate the
ocean depends on:
a. |
The
dust, cloud cover, and gases in the atmosphere. |
b. |
The
angle of the sun above the horizon. |
c. |
The
smoothness or roughness of the sea surface. |
d. |
The
amount of suspended material in the water. |
e. |
(All
of these statements apply.) |
____32. The wavelengths of light that penetrate
deepest into the ocean are:
a. |
red and violet. |
b. |
red and yellow. |
c. |
blue and orange. |
d. |
green and blue. |
e. |
(All
wavelengths penetrate equally efficiently.) |
____33. The densest seawater is the:
a. |
coldest. |
b. |
saltiest. |
c. |
warmest and
freshest. |
d. |
freshest. |
e. |
coldest and
saltiest. |
____34. A zone in which the ocean's salinity
increases rapidly with increasing depth is called:
a. |
a halocline. |
b. |
a thermocline. |
c. |
a pycnocline. |
d. |
a metacline. |
e. |
a salticline. |
____35. Seawater freezes ____________ fresh water.
a. |
at a
higher temperature than |
b. |
at a
lower temperature than |
c. |
at
the same temperature as |
____36. About what percentage of the incoming
sunlight is absorbed by the Earth's land and water surface?
a. |
20% |
b. |
33% |
c. |
51% |
d. |
67% |
e. |
89% |
____37. The main carrier of heat between the warm
tropics and the cold polar regions is
a. |
the atmosphere. |
b. |
ocean surface
currents. |
c. |
deep ocean
currents. |
d. |
oil and natural
gas tankers. |
____38. The most pronounced thermoclines
exist in:
a. |
the temperate
zones. |
b. |
the polar
regions. |
c. |
the tropics. |
d. |
anywhere -- it
depends on water salinity. |
e. |
anywhere -- it
depends on water clarity. |
____39. About what percent of ocean water is
contained in the "deep zone" beneath the pycnocline?
a. |
30% |
b. |
40% |
c. |
60% |
d. |
80% |
e. |
99% |
____40. The upper sunlit layer of the ocean is
called __________ and extends to a depth of about ____________
:
a. |
the aphotic zone ... 100 meters |
b. |
the photic zone ... 100 meters |
c. |
the
absorption zone ... 1000 meters |
d. |
the
scattering zone ... 100 meters |
e. |
the photic zone ... 1000 meters |
____41. The speed of sound in water is ____________
the speed of sound in air.
a. |
lower
than |
b. |
about
the same as |
c. |
greater
than |
____42. The "afternoon effect" involves:
a. |
the higher wind
waves present in the afternoon. |
b. |
the efficiency of
light transmission in the afternoon. |
c. |
the bending of
sound waves by animals in the water. |
d. |
the refraction of
sound by water layers of different densities. |
e. |
the bending of
sound waves by tiny plant-like organisms in the water. |
____43. Active sonar differs from passive sonar in
that active sonar:
a. |
requires more
attention on the part of the operator. |
b. |
works at a
greater distance. |
c. |
can only be used
on large ships. |
d. |
uses sound to
probe as well as listen. |
e. |
is incapable of
distinguishing whales from submarines. |
____44. The U. S. Navy's IUSS (Integrated Undersea
Surveillance System) is interesting to oceanographers because:
a. |
it tracks
submarines by detecting heat from their nuclear reactors. |
b. |
it allows
researches to track marine mammals and listen for underwater earthquakes. |
c. |
it uses trained
marine mammals to listen for submarines and report their positions to
authorities. |
d. |
it has been used
to trigger small earthquakes along mid-ocean ridges for research purposes. |
____45. The hydrogen atoms in a water molecule tend
to bond to
a. |
each other. |
b. |
oxygen atoms of
another water molecule. |
c. |
hydrogen atoms of
another water molecule. |
d. |
all nearby
positively charged ions. |
e. |
oil droplets in
the water. |
____46. The average salinity of the world ocean is
closest to which of the following:
a. |
34.5
o/oo |
b. |
54.3 o/oo |
c. |
73.6 o/oo |
d. |
94.5
o/oo |
e. |
Hey,
everyone knows that the ocean is fresh! |
____47. Other than the hydrogen and oxygen atoms
themselves, the two most abundant solids (ions) dissolved in seawater are
a. |
fluorine and
iodine. |
b. |
gold and silver. |
c. |
bromine and
boron. |
d. |
sodium
and chloride |
e. |
carbonate and
sulfate. |
____48. The hydrogen and oxygen atoms in a water
molecule are held together by:
a. |
electrostatic
attraction (ionic bonding) |
b. |
the two negative
ions. |
c. |
electron sharing
(covalent bonding). |
d. |
surface tension. |
e. |
hydrogen bonds. |
____49. The term "salinity" refers to
a. |
the total amount
of dissolved solids and gases in the ocean. |
b. |
the total amount
of dissolved oxygen in seawater. |
c. |
the total amount
of solvent in the water. |
d. |
the total amount
of chloride ion in the water. |
e. |
the total amount
of sodium in the water. |
____50. Once an element or dissolved substance
reaches the ocean,
a. |
it will remain
dissolved in the water forever. |
b. |
it will settle to
the seafloor in less than 100 years. |
c. |
it will be
removed quickly by the activities of organisms. |
d. |
it may stay or be
removed depending on the individual chemistry of the element. |
____51. Which of the following statements best
describes the conservative constituents of seawater?
a. |
Conservative
constituents, which include salinity, change very slowly. |
b. |
Conservative
constituents are elements involved in chemical and biological processes that
change rapidly. |
c. |
Conservative
constituents must be conserved for future generations. |
d. |
Conservative
constituents of seawater include gold and other valuable elements dissolved
in seawater. |
____52. Oxygen enters seawater mainly
a. |
through the
respiration of animals. |
b. |
as a byproduct of
photosynthesis. |
c. |
as a result of
decomposition of plant and animal remains. |
d. |
through the
oxidation of metal ions in seawater. |
____53. The amount of gas that seawater can hold in
solution will be greater
a. |
in colder water. |
b. |
in warmer water. |
c. |
in salty water. |
d. |
under less
pressure. |
____54. The major source of carbon dioxide in
seawater is
a. |
from
photosynthesis by marine plants. |
b. |
from rain falling
into the ocean. |
c. |
from the
respiration of marine animals and other organisms. |
d. |
from seafloor
sediments. |
____55. Most seawater samples are taken
a. |
in a plastic
bucket. |
b. |
in a paper cup. |
c. |
in a messenger
sampler. |
d. |
in a Nansen or Niskin sampling bottle. |
e. |
in a Rumple-Stillskin sampler. |
____56. The property of seawater used in induction salinometers
to measure salinity is
a. |
density. |
b. |
electrical
conductivity. |
c. |
surface tension. |
d. |
heat capacity. |
e. |
optical
refraction. |
____57. The densest phase of water is
a. |
gas. |
b. |
liquid. |
c. |
solid. |
d. |
They
are all the same density. |
____58. A solution is made of two components, a(n) __________ and a(n) ___________.
a. |
bond
... atom |
b. |
atom
... molecule |
c. |
solute
... solvent |
d. |
ion
... atom |
e. |
negative
ion ... positive ion |
____59. The dissolved ions present in seawater
alter the characteristics of pure water in all of the following ways except:
a. |
The
ions cause seawater to freeze at a lower temperature than fresh water. |
b. |
The
ions cause seawater to boil at a higher temperature than fresh water. |
c. |
The
ions cause seawater to evaporate more slowly (in equal conditions of temperature and
pressure) than fresh water. |
d. |
The
ions cause the seawater to become less dense than freshwater. |
____60. The components of ocean water whose
proportions are not accounted for by the weathering of surface rocks are
called:
a. |
excess volatiles. |
b. |
zwitterions. |
c. |
excess ionics. |
d. |
excess
constituents. |
e. |
Forchhammer
volatiles. |
____61. The Principle of Constant Proportions
states:
a. |
that the total
amount of dissolved solids in the ocean is a constant. |
b. |
that the salinity
of the ocean is a constant. |
c. |
that the excess
volatile ratio of the ocean is a constant. |
d. |
that the ratio of
major salts in samples of seawater from various places is a constant. |
____62. We can determine salinity if we know:
a. |
the density of a
water sample. |
b. |
the mass of a
water sample. |
c. |
the chlorinity of a water sample. |
d. |
the exact color
of a water sample. |
e. |
the temperature
of a water sample. |
____63. Residence
time is:
a. |
The
same for all dissolved solids and gases in the ocean. |
b. |
The
average length of time a dissolved ion spends in the ocean. |
c. |
A
measure of tenure for a professor of oceanography. |
d. |
A
function of Forschhammer's principle. |
e. |
The
same as mixing time. |
____64. What is the approximate mixing time of the
world ocean?
a. |
About
1,400 years. |
b. |
About
150,000 years. |
c. |
About
150,000,000 years. |
d. |
About
1.5 billion years. |
e. |
It has
never been fully mixed…and never will be. |
____65. Which of the following statements about pH
is not true?
a. |
pH relates to
acid-base balance. |
b. |
a pH of 10 is
alkaline, a pH of 3 is acid. |
c. |
Buffers
prevent large swings in pH. |
d. |
As a
whole, the pH of the ocean is mildly acidic. |
e. |
pH will tend to
rise in areas of rapid plant growth. |
____66. Water's slight blue color is caused by the
absorption of red light by:
a. |
living things in
the ocean. |
b. |
the covalent
bonds between hydrogen and oxygen in the water molecule. |
c. |
the hydrogen
bonds between water molecules. |
d. |
a refractive
illusion. |
____67. The salinity of the ocean, at the present
time, seems to be
a. |
increasing due to
evaporation as the Earth warms up. |
b. |
decreasing due to
several years of excessive rainfall. |
c. |
increasing due to
pollution. |
d. |
in equilibrium,
with dissolved components entering equal to dissolved components leaving. |
____68. The most abundant gaseous components of the
Earth's atmosphere are:
a. |
carbon dioxide
and oxygen. |
b. |
nitrogen and
hydrogen. |
c. |
nitrogen and
carbon dioxide. |
d. |
nitrogen and
oxygen. |
e. |
oxygen and carbon
dioxide. |
____69. Hot air _____________, while cool air
_____________.
a. |
expands
... rises |
b. |
contracts
... expands |
c. |
expands
and rises ... contracts and sinks |
d. |
expands
and rises ... expands and sinks |
____70. Seasons are caused by
a. |
changes in the
weather. |
b. |
annual variation
in the energy output of the sun. |
c. |
the Earth's 23°
rotational tilt relative to the plane of its orbit around the sun. |
d. |
our being closer
to the sun in summer. |
____71. Earth is "tilted" at about 23°
relative to its orbital plane around the sun.
This causes
a. |
the change in
temperature and climate known as the seasons. |
b. |
the periods of
illumination (or darkness) at the poles that last for six months. |
c. |
longer day
lengths around here in the summer. |
d. |
higher summer
temperatures. |
e. |
all of these
things. |
____72. Earth rotates eastward at about
a. |
1,000
miles per hour. |
b. |
500
miles per hour. |
c. |
55 miles
per hour. |
d. |
10,000
miles per hour. |
e. |
impossible to say
without knowing the latitude. |
____73. According to the atmospheric circulation
model developed in the text, air tends to
a. |
rise at 30° north
and fall at 60° north. |
b. |
rise at 60° north
and fall at 30° north. |
c. |
rise at 30° north
and fall at 0° north. |
d. |
rise at 30° north
and rise at 60° north. |
e. |
none of the
above. |
____74. There are _____ main wind bands in each hemisphere of the Earth.
a. |
2 |
b. |
3 |
c. |
4 |
d. |
5 |
e. |
6 |
____75. The Coriolis effect causes objects moving in the northern hemisphere to veer off course
a. |
to the right, or
clockwise when viewed from above. |
b. |
to the left, or
counterclockwise when viewed from above. |
c. |
in an upward
direction. |
d. |
in a downward
direction. |
e. |
they don't veer
off course -- they continue straight. |
____76. If you were standing on top of a high mid-Pacific island at 15° north latitude, from which
direction would you expect the wind to come? (Hint: don't forget to consider Coriolis effect!)
a. |
north. |
b. |
south. |
c. |
northwest. |
d. |
northeast. |
e. |
southwest. |
____77. The dependable (persistent) surface winds
of the Earth centered at about 15° north and south latitudes are called:
a. |
the westerlies. |
b. |
the northerlies. |
c. |
the trade winds. |
d. |
the doldrum winds. |
e. |
the ITCZ. |
____78. The meteorological equator
a. |
is also called
the "thermal equator." |
b. |
is usually
located about 5° north of the geographical equator. |
c. |
represents the
imaginary line of thermal equilibrium between hemispheres. |
d. |
is a place where
surface winds converge. |
e. |
all of the above. |
____79. Winds (and winter storm systems) generally
moves across the
a. |
from north to
south. |
b. |
from east to
west. |
c. |
from south to
north. |
d. |
from west to
east. |
e. |
from high
altitude to low altitude. |
____80. Hurricane Andrew, the most costly natural
disaster to strike the
a. |
an extratropical cyclone. |
b. |
a monsoon. |
c. |
a tropical
cyclone. |
d. |
a tornado. |
e. |
a frontal storm. |
____81. The boundary between two air masses is
called a(n):
a. |
Hadley
line. |
b. |
Bjerkens line. |
c. |
Hadley
cell. |
d. |
front. |
e. |
ITCZ. |
____82. Tropical cyclones are also called:
a. |
willi-willis. |
b. |
typhoons. |
c. |
hurricanes. |
d. |
(All
of these are the same things, just with different names.) |
____83. Weather may be defined as:
a. |
long-term
temperature and rainfall trends. |
b. |
long-term
humidity and precipitation trends. |
c. |
long-term changes
in the composition of the atmosphere. |
d. |
short-term
changes in the composition of the atmosphere. |
e. |
short-term,
localized characteristics of the atmosphere. |
____84. Vast regions or belts of vertical air
movement (either rising or falling) are primarily found on the Earth at
latitudes
a. |
0°
and 30°. |
b. |
45°
and 75°. |
c. |
60°
and 90°. |
d. |
Both,
a. and c. |
e. |
None
of these latitudes. |
____85. Which of these phenomena is NOT associated
with tropical cyclones?
a. |
storm
surge and flooding |
b. |
high
winds |
c. |
heavy
rainfall |
d. |
low
atmospheric pressure |
e. |
high
atmospheric pressure |
____86. When air masses come together in the
mid-latitudes
a. |
very little
weather activity results. |
b. |
a tropical
cyclone forms. |
c. |
one air mass may
ride up and over the other and form a front. |
d. |
one air mass may
ride up over the other and form a storm surge. |
e. |
(none of the above.) |
____87. The power for tropical cyclones comes from
a. |
static
electricity. |
b. |
the condensation
of warm, dry air. |
c. |
the Coriolis effect. |
d. |
the condensation
of warm, moist air. |
e. |
the |
____88. When viewed from above, tropical cyclones
rotate ______________ in the southern hemisphere.
a. |
clockwise |
b. |
counterclockwise |
c. |
either way -- it
depends on the individual storm. |
d. |
only northern
hemisphere tropical cyclones rotate. |
____89. Wintertime cyclonic systems typically form
a. |
near the
meteorological equator. |
b. |
near the thermal
equator. |
c. |
at high
latitudes, at the north or south pole. |
d. |
at high
latitudes, at the junction between the polar cells and the Ferrel cells. |
e. |
In
the tropics. |
____90. Tropical cyclones tend to move
a. |
equatorward in both hemispheres. |
b. |
eastward and poleward in both hemispheres. |
c. |
westward and poleward in both hemispheres. |
d. |
poleward in both hemispheres. |
e. |
in completely
unpredictable ways. |
____91. A system of four ocean currents completing
a flow circuit around the periphery of an ocean basin is collectively called:
a. |
a Ferrel cell. |
b. |
a Coriolis pattern. |
c. |
a geostrophic gyre. |
d. |
a gimble swirl. |
e. |
a wabe. |
____92. The ultimate
source of the energy for ocean’s currents is:
a. |
weather. |
b. |
wind. |
c. |
the sun. |
d. |
the tides. |
____93. The direct source of the energy for
ocean’ surface currents is:
a. |
weather. |
b. |
wind. |
c. |
the sun. |
d. |
the tides. |
____94. The Earth's rotation influences currents by
an apparent force known as:
a. |
|
b. |
geostrophism. |
c. |
gyral nutation. |
d. |
Coriolis effect. |
____95. Ocean surface currents (gyres) tend to move
in great _______________ patterns in the Northern
Hemisphere.
a. |
irregular. |
b. |
counterclockwise. |
c. |
clockwise. |
d. |
random. |
____96. The only ocean current that continues in an
uninterrupted circle around the circumference of the Earth without encountering
land is the:
a. |
|
b. |
Kuroshio, or |
c. |
West
Wind Drift. |
d. |
Canary
Current. |
____97. Generally the fastest and deepest ocean
currents are:
a. |
northern boundary
currents. |
b. |
eastern boundary
currents. |
c. |
western boundary
currents. |
d. |
southern boundary
currents. |
____98.
a. |
colder. |
b. |
drier. |
c. |
less humid. |
d. |
warmer and
wetter. |
____99.
a. |
cold eastern
boundary current. |
b. |
warm eastern
boundary current. |
c. |
cold western
boundary current. |
d. |
warm western
boundary current. |
____100. Countercurrents and undercurrents generally move _____________ than the
surface current above, and in ______________ direction.
a. |
faster
... the same |
b. |
faster
... the opposite |
c. |
slower
... the same |
d. |
slower
... the opposite |
____101. The most dense water in ocean currents is the
a. |
warmest and
saltiest. |
b. |
coldest and
saltiest. |
c. |
warmest and
freshest. |
d. |
coldest and
freshest. |
____102. The Cromwell Current is
a. |
a bottom current
flowing in the same direction as an overlying surface current. |
b. |
a shallow current
below a surface current and flowing in the same direction. |
c. |
a shallow current
below a surface current and flowing in the opposite direction. |
d. |
a theoretical
current not yet discovered. |
____103. Benjamin Franklin was the first person to recognize the extent of the
__________ off
the Eastern Seaboard of the
a. |
North
Equatorial Current. |
b. |
|
c. |
El
Niño. |
d. |
Kuroshio Current. |
e. |
Canary
Current. |
____104. Geostrophic gyres can be described by which of the following statements?
a. |
They
are powered by prevailing surface winds. |
b. |
They
depend on Coriolis effect and the position of
continental land masses for their direction. |
c. |
They
form gyres around the perimeters of ocean basins. |
d. |
They
are physically large oceanic phenomena. |
e. |
All
of the above are true. |
____105. Which current within a Northern Hemisphere gyre would you expect to
have the lowest salinity and temperature?
a. |
a western
boundary current. |
b. |
an eastern
boundary current. |
c. |
a southern
boundary current. |
d. |
a northern
boundary current. |
e. |
All
of these currents would be about equal in temperature and salinity. |
____106. El Niño results due to an interruption of flow of the ____________
Current(s) in the Pacific.
a. |
Kuroshio |
b. |
Humboldt
and Equatorial |
c. |
Canary
and |
d. |
West
Wind Drift |
e. |
|
____107. During an El Niño event,
a. |
the trade winds
strengthen. |
b. |
the central
eastern |
c. |
sea level falls
in the central eastern |
d. |
a strong
equatorial countercurrent develops in the Pacific. |
e. |
the Peru Current
strengthens. |
____108. Which of these is generally NOT an El Niño effect?
a. |
A
rise in the sea level off the coasts of the American Continents. |
b. |
An
increase in ocean surface temperature in the Eastern Pacific. |
c. |
An
increase in rainfall in west coastal countries or states of the American
continents. |
d. |
An
often catastrophic decrease in the commercial fisheries of the affected
countries. |
e. |
A
decline in the exotic, warm-water species of fish and other forms of marine
life in the affected waters. |
____109. Which ocean surface current carries the greatest volume of water?
a. |
The Kuroshio (or |
b. |
The
North Equatorial Current in the Pacific. |
c. |
The
South Equatorial Current in the Pacific. |
d. |
The
West Wind Drift. |
e. |
The
Canary Current. |
____110. Wind moving from north to south along the
a. |
move south. |
b. |
move toward shore
(east) – producing downwelling. |
c. |
move away from
shore (west) – producing upwelling. |
d. |
move north. |
____111. Most of the ocean’s deepest bottom water initially forms
a. |
near the ocean
floor in the arctic. |
b. |
near the ocean
floor in the Antarctic. |
c. |
near the ocean
surface in the arctic. |
d. |
near the ocean
surface in the Antarctic. |
____112. The main force driving thermohaline
circulation is:
a. |
wind. |
b. |
the Coriolis effect. |
c. |
seawater density
and gravity. |
d. |
plate tectonics. |
____113. CFCs (chlorinated fluorocarbons) are used to trace the movement of
ocean currents because:
a. |
they are
inexpensive. |
b. |
they are
long-lived and can be detected in very small quantities. |
c. |
they are
dangerous to marine organisms and must be removed. |
d. |
they dissolve on
water only at the ocean surface. |
e. |
(both
b and d) |
Section IIIA.
Matching: Questions 114 through 123
Directions:
Match the oceanographic feature or concept with its associated term or
relationship (letter(s))
a. |
Formation of sea ice
|
a+b |
Western boundary current |
b. |
The Trades |
b+c |
Excessive warm water in the tropical Eastern Pacific |
c. |
Coriolis effect |
c+d |
Hydrogen bonding |
d. |
Iron |
d+e |
Sodium ion |
e. |
Eastern boundary current |
a+e |
Excessive cold water in the tropical Eastern Pacific |
____ 114. Deflects objects moving over Earth’s
rotating surface
____ 115. Attributed with most of water’s remarkable
thermal properties
____ 116. La Niña
____ 117. The
____ 118. An abundant, conservative constituent in
seawater
____ 119. Surface winds of the Hadley Cell
____ 120. A sparse, nonconservative constituent in
seawater
____ 121. The
____ 122. El Niño
____ 123. Downwelling of
cold, salty polar waters
Section IIIB. Matching: Questions 124 through 130
Directions: Match
each specified geographic locality (Letter) with its associated oceanographic
current
(letter). Note that one of the currents below is not
assigned on the map.
a. |
West Wind Belt |
e. |
|
b. |
Kuroshio |
f. |
Equatorial Transverse |
c. |
North Pacific Eastern Boundary |
a+b. |
Agulhas |
d. |
|
b+c. |
Humboldt
|
____ 124. Locality T
____ 125. Locality U
____ 126. Locality V
____ 127. Locality W
____ 128. Locality X
____ 129. Locality Y
____ 130. Locality Z
Section IIIC. Matching: Questions 131 through 139
Directions: Correctly match each numbered term or phrase with its associated
weather map (Map X or Y). Note that you mark “a” on your scantron for Map X and “b” for Map Y.
a. |
Map X |
b. |
Map Y |
|
|
____ 131. Winter Weather in Northern Hemisphere
____ 132. Summer Weather in Northern Hemisphere
____ 133. Dry season in Southeast Asia
____ 134. Better weather for the Alaskan crabbers
____ 135. Weaker westerly winds in the South
Pacific
____ 136. Nicest weather to visit
____ 137. Stormiest ocean conditions in the North
Pacific and North Atlantic
____ 138. Time of year for bigger, more consistent
surf in San Diego
____ 139. Time of year for hurricanes
off the west coast of
____ 140. Time of year for thunderstorms
in the desert southwest of