Quiz
Dynamic Planet: Oceanography 4-18-15
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Questions in this quiz (25)
1The data in the graph can be useful in explaining the greenhouse effect when they are compared with
- Avolcanic activity
- Bsunspot activity
- Cmean global temperatures
- Dannual nitrous oxide production
- Ecycles of flooding and drought
2The annual fluctuation in Carbon dioxide concentration can best be explained by the
- Aseasonal use of fossil fuels
- Bregularity of volcanic activity
- Cdeforestation in the tropics
- DEl Nino events
- Eseasonal photosynthetic activity of green plants
3The polar regions radiate away more heat energy than they receive from the Sun in the course of a year.
However, they are prevented from becoming progressively colder each year primarily by the- Aabsorption of ultraviolet radiation by snow
- Btransport of heat through the atmosphere and oceans
- Cconcentration of Earth’s magnetic field lines at the poles
- Drelease of latent heat to the atmosphere when the polar ice caps melt
- Egeneration of heat by glacial movement
4Which of the following natural events would be most likely to contribute to the cooling of Earth’s atmosphere?
- AEarthquake
- BVolcanism
- CHurricane
- DTsunami
- EMonsoon
5Which of the following regions of the ocean is LEAST likely to contain photosynthetic organisms?
- AIntertidal zone
- BZone of coastal upwelling
- CPelagic zone
- DEuphotic zone
- EAbyssal zone
6In the general pattern of the ocean's currents, the direction of the currents nearest the equator move from
- Aeast to west
- Bwest to east
- Cnorth to south
- Dsouth to north
- Esouthwest to northeast
7What pulls the warm Atlantic water north in the summer?
- ALa Nina
- BConvection
- CEl Nino
- DCoriolis effect
- EGulf stream
8Oxygen-depleted zones of the oceans, such as the one at the mouth of the Mississippi River, are most likely caused by
- Alarge numbers of fish that are using up all the oxygen in the water
- Ba reduction in the plant life in rivers that empty into the ocean near the dead zone
- Cexcessive fertilizers carried into the ocean, which cause algal bloom that lowers the oxygen levels
- Dthermal pollution in the ocean
- Eacid precipitation falling on the ocean
- Alarge numbers of fish that are using up all the oxygen in the water
9In sea water, carbon is mostly found in the form of
- Aphosphoric acid
- Bcarbon monoxide
- Cbicarbonate ions
- Dmethane gas
- Eglucose
10A rise in sea level is LEAST likely to
- Aflood areas where one-third of the world's human population lives.
- Bsave the coral reefs
- Caccelerate coastal erosion
- Dcontaminate coastal aquifers
11The type of wind driven wave found in large bays or semi enclosed areas is
- Abore
- Bseiche
- Ctsunami
- Dlong shore current
- Eedge wave
12In the absence of light, oceanographers use _____________________ to image the ocean floor
- Aradar
- Blasers
- Csound waves
- Dradar, lasers, sound waves
- Eradar, sound waves
13When the Moon and Sun are aligned with the Earth you will get
- Aneap tides
- Bspring tides
- Csemi-diurnal tides
- Dmixed tides
- Eneap, spring, semi-diurnal and mixed tides
14Going away from a mid-ocean ridge
- Awater depth increases
- Bthe age of the ocean floor increases
- Clithosphere thickens
- Dheat flow decreases
- Eall of the above
15Deep sea "red clays" get their red color from
- Airon already present in their structure is oxidized
- Bcobalt absorbed from seawater
- Ciron oxide that they absorb from seawater
- Dthey consist of the shells of red-tide causing planktonic dynoflagellates
- Enone of the answers
16According to Darwin's theory of the origin of coral atolls, atolls form as
- Aa large volcanic explosion blasts away the center of the island, leaving only a ring-shaped caldera
- Ban asteroid impact produces a crater surrounded by an uplifted ring
- Cchemosynthetic bacteria provide an energy source in the absence of light
- Dcorals of a reef that originally fringed an island continue to grow as the island sinks
- Eglobal warming caused sealevel to rise
17The average salinity of seawater is about
- A3.5‰
- B2.3%
- C35‰
- D25ppm
- E35%
18In a 3-step process in which ice at 0˚C is first melted, then the water temperature raised to 100˚C and finally that water converted to steam, a total of 720 calories/gram is needed. Of this, the energy required to convert water to steam requires
- Aexactly equal to the energy required to convert ice to water
- Bthe most energy of the 3 steps
- Cexactly 100 calories per gram
- Dless than 100 calories per gram
- Ethe least energy of the 3 steps
19The energy represented by the latent heat of evaporation of H2O is being used mainly to
- Araise the temperature of the vapor
- Braise the temperature of liquid water
- Cbreak hydrogen bonds
- Dincrease the energy of individual molecules
- Edissociate hydrogen and oxygen
20Which of the following is NOT a reason scientists are interested in hydrothermal systems
- AMany of the copper and zinc deposits we currently mine were produced in similar environments
- BIt is possible, and some think likely, that life originated in similar environments
- CThey are significant factor in the thermal budget of the oceans and in thermohaline circulation
- DThey are a factor in controlling the composition of seawater, e.g., as a sink for magnesium
- Eboth (a) and (b)
21 A deep sea sediment consisting primarily of the shells of diatoms would be called
- Ared clay
- Ba siliceous ooze
- Ca carbonate ooze
- Dcosmogenic sediment
- Eneritic sediment
22Siliceous oozes are most likely to be found
- A on continental margins
- B on areas of the ocean floor shallower than the carbonate compensation depth
- Con deep ocean floor underlying areas of low biologic productivity
- Don the deep ocean floor underlying areas of high biologic productivity
- Ein deep sea trenches
23Which of the following is not true of pure water:
- A It has a very high heat capacity compared to other substances
- B It’s latent heat of vaporization is very high compared to other substances
- CMore carbon dioxide gas dissolves into it as temperature decreases,
- DIt dissolves more substances than any other naturally occurring compound.
- EIt is most dense at 0 deg C
24The oceans act as a sort of thermostat, moderating temperature on the Earth. The physical property of water most responsible for this effect is:
- Aviscosity
- Bdensity
- Cdielectric constant
- Dheat capacity
- Eelectromagnetic absorption spectrum
25Which of the following is not among the major ions in seawater
- AMg
- BSulfate
- CSodium
- DChloride
- ENitrate
Information
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- DP: OC APRIL 2015
- Author
- p4321p4321
- Language
- English
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