Unit 5 Weather & Global Climate_ Lab Practical on Ocean Currents (1.5 points)
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Arizona State University *
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Course
111
Subject
Geography
Date
Feb 20, 2024
Type
Pages
2
Uploaded by toppingdog0964
Score for this quiz: 1 out of 1.5
Submitted Feb 5 at 7:11pm
This attempt took 2 minutes.
Question 1
0.5 / 0.5 pts
Please go to NASA's Scientific Visualization Studio and look at the first animation of Ocean
Currents on this webpage.You are seeing ocean flow data. For this question, focus on the
Pacific and Atlantic Oceans right around the equator. For the most part, in what direction are the
ocean currents moving? Fill in the blank with the best answer. Equatorial ocean currents in the
Atlantic and Pacific Oceans typically move from _________ to _________.
northwest to southeast
northeast to southwest
west to east
Correct!
east to west
For most of the time during the visualization, the ocean currents around the equator in the
Atlantic and Pacific oceans are moving from east to west. They are being driven by the trade
winds.
Question 2
0.5 / 0.5 pts
The second graphic on this website is a voiced-over animation about changes in the salinity of
the Earth's oceans. The video is about 2.5 minutes long. Please watch it, and then answer the
following question.
You are asked in this question to match a salinity feature shown in the animation to a cause.
Correct!
In much of the center of the tropical North Atlantic stretching from Africa to the Caribbean, this
big area of high salinity is caused by ____________.
evaporation of water from the ocean surface.
Correct!
The patch of low salinity water in the Atlantic Ocean next to South America and right next to the
equator is caused by _________.
fresh water coming from the Amazon River
Correct!
The patch of low salinity water near the equator in the eastern Pacific Ocean (off the west coast
of South America) is caused by _________.
abundant rainfall that adds fresh water to the ocean surface.
Correct!
The patch of low salinity water just south of Greenland (Labrador Sea) along the far northeast
side of North America is caused by _______________.
the seasonal melting of ice.
The low salinity of the ocean surfaces near the mouth of the Amazon River, in the equatorial
Pacific, and close to Greenland all have a similar cause: addition of fresh water. In contrast,
where ocean water can evaporate -- such as on the surface of the tropical Atlantic Ocean,
salinity increases.
Question 3
0 / 0.5 pts
On this webpage from NASA's visualization center, the very first animation is voiced over by
Greg Shirah. Greg is discussing the development of a model to predict where garbage will
accumulate in the Earth's oceans. The model is validated by ocean buoys. Your question is
simple: where does the garbage (and ocean buoys) collect after being moved around by ocean
currents? This question requires that you first learned about the general circulation of the
atmosphere along with the location of pressure belts.
Correct Answer
In ocean gyres that tend to be centered under subtropical highs
Along the equator
You Answered
In ocean gyres that tend to be centered under the intertropical convergence zone
In ocean low pressure centers that tend to be centered under subtropical highs.
The ocean garbage patches are near the center of ocean gyres, and ocean gyres are typically
centered under subtropical highs. For more information about ocean garbage patches, click on
this link Links to an external site..
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