Which of the following is NOT a property of water?
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.
Global warming can cause all of the following EXCEPT
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
Areas of low air pressure are typically characterized by _________________ air and move toward areas where the air pressure is ___________________.
sinking, not changing
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.
I and III
I, II and III
Which of the following is LEAST likely to be an effect of global warming?
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
On the pH scale, _____________ is neutral.
Which of the following statements about hot spot tracks is correct?
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.
In the Atlantic Ocean, where does the youngest oceanic crust occur?
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
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?
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
If the earth had no ocean
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
Plate tectonics influences
the size and shape of the ocean basins
sediment accumulation rates
circulation in the oceans
migration of organisms
all of the above
The deepest parts of the seafloor tend to be the youngest oceanic crust.
The oceanic lithosphere is generated at divergent plate boundaries, whereas
continental lithosphere is generated at convergent plate boundaries.
Compared to the Atlantic Ocean, the Pacific has
(a) a larger area and greater average depth
(b) more trenches and more frequent tsunamis
(c) more passive continental margins
a, b & c
Which of the following results in an increase of nutrients in surface seawater?
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
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
Which of the following is NOT a western boundary current?