1. The passage suggests that which two geological concepts were crucial to the development of Harry Hess’s formulation of the plate tectonics theory?
A. Seafloor spreading and subduction
divergent boundaries (cause for seafloor spreading) , and covergent boundaries (subduction) ---refer Paragraph 3..CORRECT answer
B. Subduction and continental drift
continental drift was Alfred Wegener's concept; hence, incorrect
C. Seafloor spreading and continental drift
continental drift was Alfred Wegener's concept; hence, incorrect
D. Magnetic resonance and continental drift
continental drift was Alfred Wegener's concept; hence, incorrect
E. Mantle theory and seafloor spreading
Out of scope, since Mantle theory has not been mentioned in the passage
2. Which of the following would make the most appropriate title for this passage?
A. At the Heart of the Matter: The Quest to Determine the Composition of the Earth’s Core
The whole passage deals with the phenomenon of continental drift, supported by Plate Tectonics theory,,Composition of earth's core not deliberated upon in good measure in the passage
B. World’s Turning: The Perplexing Story of the Earth’s Magnetic Field
Only a portion of the passage deals with this aspect
C. Tectonic Shift: The Plate Tectonics Revolution in the Earth Sciences
CORRECT answer, since the whole passage deals with the phenomenon of continental drift, supported by Plate Tectonics theory
D. Harry Hess: A Man, a Planet, a Theory
Harry Hess's theory was just one view supporting the overall Plate Tectonics theory
E. The Transformation of Heuristic Models in Geology, Oceanography, and Paleontology
Out of scope stimulus
3. The author’s attitude toward the plate tectonics theory can best be characterized as
A. strong disagreement
author has supported Continental theory and Plate Tectonics concepts.
B. lingering doubt
Incorrect, since author has supported Continental theory and Plate Tectonics concepts.
C. ambivalent
Except for Paragraph 1, the author has supported Continental theory and Plate Tectonics concepts.
D. supportive, but reserved
Through presenting relevant evidence in the form of several scientists, the author has supported Continental theory and Plate Tectonics concepts..However, doesn't side fully since he has not cited his personal opinion anywhere in the passage..CORRECT answer
E. strong agreement
The author has 'reserved' support by citing evidence in the form of several scientists' theories
4. Geologists believe that the Andes mountain chain along the Pacific coast of South America was created by the collision of the oceanic Nazca plate with the continental South American plate; this type of plate boundary is known as a.
A. Convergent boundary
creation of mountain chain ---- last three lines of paragraph 3 support this option..CORRECT answer
B. Transform boundary
plates' grinding is the example, NOT the mountain chain
C. Subduction boundary
Subduction is phenomenon , not listed as boundary type
D. Divergent boundary
seafloor spreading is the example, NOT the mountain chain
E. Tectonic boundary
No such boundary type listed
5. The passage suggests that the plate tectonics theory can help explain all of the following phenomena, EXCEPT.
A. The shape and location of some continents
listed in paragraph 2 (line 10)
B. The apparently anomalous location of some fossils
listed in paragraph 2 (line 3)
C. The curious magnetic orientation of magnetite rock formations
listed in paragraph 2 (line 5)
D. The clustering of volcanic and seismic activity in certain geographic Locations
listed in paragraph 2 (lines 7 and 8)
E. The phenomenon of regular tides in seas and oceans
NOT listed as a phenomenon explaining the Plate Tectonics theory..CORRECT answer
Thus, the Correct sequence of answers is ACDAE for Q. 1,2,3,4,5