Dynamic Planet: Oceanography-Q2 05-10-15

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Quiz by p4321p4321, updated more than 1 year ago
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Created by p4321p4321 almost 6 years ago
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DP event 2015

Resource summary

Question 1

Question
Which of the following is NOT a property of water?
Answer
  • Water has the ability to filter out UV light
  • Water is a solvent, allowing many chemicals to dissolve in it.
  • When water freezes into ice, it expands.
  • Water can change its temperature very quickly.
  • All of the above.

Question 2

Question
Global warming can cause all of the following EXCEPT
Answer
  • A rise in sea levels
  • the lowering of pH of the oceans
  • increased temperature stratification in the oceans
  • increased volcanic activity
  • all choices are consequences of global warming

Question 3

Question
Areas of low air pressure are typically characterized by _________________ air and move toward areas where the air pressure is ___________________.
Answer
  • rising, decreasing
  • sinking, increasing
  • rising, increasing
  • sinking, decreasing
  • sinking, not changing

Question 4

Question
Which of the following events occur during an El Nino? I. Ocean surface temperatures along the North and South American coasts become cooler. II. Upwellings of cold, nutrient-rich water are suppressed. III. Prevailing easterly winds weaken.
Answer
  • I only
  • II only
  • III only
  • I and III
  • I, II and III

Question 5

Question
Which of the following is LEAST likely to be an effect of global warming?
Answer
  • Loss of fertile delta regions for agriculture
  • Change in global patterns of precipitation
  • Extinction of some species that have narrow temperature requirements
  • Decreased rate of photosynthesis in vegetation
  • Increased frequency of hurricanes

Question 6

Question
On the pH scale, _____________ is neutral.
Answer
  • 3
  • 4
  • 5
  • 6
  • 7

Question 7

Question
Which of the following statements about hot spot tracks is correct?
Answer
  • All of the volcanoes making up the track have erupted at roughly the same time.
  • The youngest volcano of the track occurs at one end of the track.
  • The track is perpendicular to the direction that the plate is moving.
  • Hot spot tracks are parallel to deep ocean trenches.

Question 8

Question
In the Atlantic Ocean, where does the youngest oceanic crust occur?
Answer
  • along coastlines of the continents
  • parallel to the paleo magnetic poles
  • adjacent to mid-ocean ridges
  • no set rule - could be anywhere in the Atlantic

Question 9

Question
The oldest seafloor rocks are Jurassic in age (~200 million years), which is much younger than the age of Earth (~4.5 billion years). What are there no seafloor rocks older than Jurassic age?
Answer
  • older seafloor rocks have all been subducted down trenches
  • older seafloor rocks have been converted to continental crust
  • the oceans are not very old either
  • all of the older seafloor rocks have been subducted at transforms

Question 10

Question
If the earth had no ocean
Answer
  • life would be more abundant, since life in the oceans is more "dilute" than life on continents
  • there would be no atmosphere
  • the range of surface temperatures on earth would be much greater than it is now
  • there would be no spreading centers

Question 11

Question
Plate tectonics influences
Answer
  • the size and shape of the ocean basins
  • sediment accumulation rates
  • circulation in the oceans
  • migration of organisms
  • all of the above

Question 12

Question
The deepest parts of the seafloor tend to be the youngest oceanic crust.
Answer
  • True
  • False

Question 13

Question
The oceanic lithosphere is generated at divergent plate boundaries, whereas continental lithosphere is generated at convergent plate boundaries.
Answer
  • True
  • False

Question 14

Question
Compared to the Atlantic Ocean, the Pacific has
Answer
  • (a) a larger area and greater average depth
  • (b) more trenches and more frequent tsunamis
  • (c) more passive continental margins
  • a&b
  • a, b & c

Question 15

Question
Which of the following results in an increase of nutrients in surface seawater?
Answer
  • increasing sea surface temperature
  • the motion of North Atlantic Deep Water in the vicinity of the Antarctic Divergence
  • the motion of Antarctic Bottom Water through the Atlantic Ocean
  • heavy precipitation directly into the ocean at the equator
  • formation of Mediterranean Water

Question 16

Question
Coriolis Effect forces water into a “hump”, more or less in the middle of each ocean basin, but is countered by the force of gravity which pulls the water down hill. When these two forces are in balance, the flow of water that is established is known as
Answer
  • thermohaline circulation
  • pycnocline
  • centrifugal force
  • geostrophic flow
  • convection

Question 17

Question
Which of the following is NOT a western boundary current?
Answer
  • Agulhas
  • Brazil
  • California
  • Gulf Stream
  • Kuroshio

Question 18

Question
In eastern equatorial Atlantic (P) you would find
Answer
  • high salinity
  • frequent hurricanes
  • upwelling of cold water
  • higher sealevel than at N

Question 19

Question
To the east of point H in the Mediterranean you'd expect to find ___ productivity due to ___
Answer
  • low / downwelling
  • low / upwelling
  • high / downwelling
  • high / upwelling

Question 20

Question
Arrange locations H, N, P, R in order from the lowest salinity to the highest salinity.
Answer
  • H, N, P, R
  • N, R, P, H
  • H, N, R, P
  • N, P, R, H

Question 21

Question
Of the following currents, which is strongest, fastest and most intense?
Answer
  • J
  • K
  • L
  • M

Question 22

Question
The photic zone
Answer
  • reaches greater at R than at N
  • is the zone in which respiration proceeds faster than photosynthesis
  • becomes deeper when there is a big wind storm like the one we had last week.
  • is the same thing as the pycnocline
  • all of the above

Question 23

Question
At a location, the water column has the temperature and salinity profiles shown to the right. Which surface process could account for these profiles?
Answer
  • freezing of sea water
  • evaporation
  • melting of glaciers
  • precipitation

Question 24

Question
The warmer the water is, the
Answer
  • a) more gases will dissolve in it
  • b) more salts will dissolve in it
  • c) faster chemical reactions proceed in it
  • a & b
  • b & c

Question 25

Question
Which of the following is a density driven phenomenon?
Answer
  • thermohaline circulation
  • hurricane
  • atmospheric circulation
  • all of the above
  • none of the above
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