Summer PSAT Day 2

Use Official Guide Test 2/Passage 5 on p. 465 to answer this question.
The first paragraph serves mainly to

• A. explain how a scientific device is used.
• B. note a common misconception about an event.
• C. describe a natural phenomenon and address its importance.
• D. present a recent study and summarize its findings.

Use Official Guide Test 2/Passage 5 on p. 465 to answer this question.
As used in line 19, "capture" is closest in meaning to 

• A. control.
• B. record.
• C. secure.
• absorb.

Use Official Guide Test 2/Passage 5 on p. 465 to answer this question.
According to Peacock, the ability to monitor internal waves is significant primarily because

• A. it will allow scientists to verify the maximum height of such waves.
• B. it will allow researchers to shift their focus to improving the quality of satellite images.
• C. the study of wave patterns will enable regions to predict and prevent coastal damage.
• D. the study of such waves will inform the development of key scientific models.

Use Official Guide Test 2/Passage 5 on p. 465 to answer this question.
Which choice provides the best evidence for the answer to the previous question?

• A. Lines 1-2 ("Some...see")
• B. Lines 4-6 ("they...equipment")
• C. Lines 17-19 ("If...this")
• D. Lines 24-26 ("Internal...high")

Use Official Guide Test 2/Passage 5 on p. 465 to answer this question.
As use in line 65, "devise" most nearly means

• A. create.
• B. solve.
• C. imagine.
• D. begin.

Use Official Guide Test 2/Passage 5 on p. 465 to answer this question.
In the graph, which isotherm displays an increase in depth below the surface during the period 19:12 to 20:24?

• A. 9 degrees Celsius
• B. 10 degrees Celsius
• C. 11 degrees Celsius
• D. 13 degrees Celsius

Use Official Guide Test 2/Passage 5 on p. 465 to answer this question.
Which concept is supported by the passage and by the information in the graph?

• A. Internal waves cause water of varying salinity to mix.
• B. Internal waves push denser water above layers of less dense water.
• C. Internal waves push bands of cold water above bands of warm water.
• D. Internal waves do not rise to break the ocean's surface.

Use Official Guide Test 2/Passage 5 on p. 465 to answer this question.
How does the graph support the author's point that internal waves affect ocean water dynamics?

• A. It demonstrates wave movement forces warmer water down to depths that typically are colder.
• B. It reveals the degree to which an internal wave affects the density of deep layers of cold water.
• C. It illustrates the change in surface temperature that takes place during an isolated series of deep waves.
• D. It shows that multiple waves rising near the surface of the ocean disrupt the flow of normal tides.