A passage dense with facts but not particularly convoluted
The transfer of heat and water vapor from the ocean to the air above it depends on a disequilibrium at the interface of the water and the air. Ok. We do know that the transfer of something depends on the water surface
Within about a millimeter of the water, air temperature is close to that of the surface water, and the air is nearly saturated with water vapor. Another fact. You just need to know that is a process is going on. If you do need to have details about just back to the passage
But the differences, however small, are crucial, and the disequilibrium is maintained by air near the surface mixing with air higher up, which is typically appreciably cooler and lower in water-vapor content. Another fact, The difference at the beginning of the passage we do know that is crucial
The air is mixed by means of turbulence that depends on the wind for its energy. The air has a crucial role in the process. As it turns out, the wind
As wind speed increases, so does turbulence, and thus the rate of heat and moisture transfer.
More speed > more motion > more mixing up
Detailed understanding of this phenomenon awaits further study. The process is still unclear
An interacting-and complicating-phenomenon is wind-to-water transfer of momentum that occurs when waves are formed. A particular of the process above that is still unclear
When the wind makes waves, it transfers important amounts of energy--energy that is therefore not available to provide turbulence.Another piece of information
17. The primary purpose of the passage is to
(A) resolve a controversy
No one is against another
(B) describe a phenomenon
Yes and that it is still unclear
(C) outline a theory
No theory we do have
(D) confirm research findings
No. We still need-finding
(E) classify various observations
No categorization
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18. According to the passage, wind over the ocean generally does which of the following?
I. Causes relatively cool, dry air to come into proximity with the ocean surface.
Quote:
But the differences, however small, are crucial, and the disequilibrium is maintained by air near the surface mixing with air higher up, which is typically appreciably cooler and lower in water-vapor content.
CORRECT
II. Maintains a
steady rate of heat and moisture transfer between the ocean and the air.
Quote:
As wind speed increases, so does turbulence, and thus the rate of heat and moisture transfer.
Not true
III. Causes frequent changes in the temperature of the water at the ocean's surface.
I did not see frequent fluctuations in the temperature. Wrong
(A) I only
(B) II only
(C) I and II only
(D) II and III only
(E) I, II, and III
Only A is correct
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19. It can be inferred from the passage that the author regards current knowledge about heat and moisture transfer from the ocean to air as
(A) revolutionary
NO
(B) inconsequential
No. I do not know what that means but for sure is incorrect
(C) outdated
no
(D) derivative
no
(E) incomplete
Correct. We do need further investigations and studies
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20. The passage suggests that if on a certain day the wind were to decrease until there was no wind at all, which of the following would occur?
(A) The air closest to the ocean surface would become saturated with water vapor.
We do know more wind > more turbulence > more exchange. Keep it for now
(B) The air closest to the ocean surface would be warmer than the water.
No true at all
(C) The amount of moisture in the air closest to the ocean surface would decrease.
it depends. Not true
(D) The rate of heat and moisture transfer would increase.
In certain circumstances could be the opposite
(E) The air closest to the ocean would be at the same temperature as air higher up.
Almost never
A is the answer
Hope this helps
19 Jul 2020, 03:30
89% (01:55) correct
