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OLD_TEST1 - OCS 1006 Fall 2007 Test II Circle Answer 50 pts...

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OCS 1006 Fall 2007 Test II ______________ Circle Answer 50 pts answer all. 1. The primary way in which scientists concluded the Earth had deep layers that were fluid was though: A. Drilling to very great depths. B. Study of satellite altimetry C. Study of earthquake seismic waves D. Study of magnetism. 2. The continents are composed of relatively light weight _______ rocks and the seafloor under the sediments is composed of heavier ________: A. Basalt, Granite B. Basalt, Serpentine C. Granite, Feldspar D. Granite, Basalt 3. The theory of isostatic equilibrium is older than the theory of plate tectonics. What aspect of a changing Earth did it explain? A. Horizontal movement much like continental drift. B. Vertical movement such as mountain building. C. Earthquakes D. Global warming. 4. While we do not know for certain what forces push the lithospheric plates around it almost certainly has to be ________: A. Sea level changes. B. Heat loss from the deep Earth C. Solar heating of the lithosphere D. Lunar tides. 5. When Wegener proposed continental drift many rejected it because the no “wake” off crushed ocean floor could be found behind the moving continents. We understand now why this is. It is because? A. Continents move away from newly formed seafloor. B. Continents float over the seafloor without damage. C. The damaged seafloor crust is hidden by sediments D. The continents no longer move. 6. The North American lithospheric plate consists of: A. The North American Continent only B. The North American Continent and the western Atlantic seafloor crust. C. The North American Continent and the Gulf and Caribbean. D. The North American Continent and the East Pacific 1
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7. The Gulf of Mexico sits at the edge of the North American Plate. Some geologists think it once was a: A. Meteor impact crater B. Volcanic crater
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This note was uploaded on 04/06/2011 for the course OCS 1006 taught by Professor Carney during the Spring '11 term at LSU.

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OLD_TEST1 - OCS 1006 Fall 2007 Test II Circle Answer 50 pts...

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