SC300 Unit3 Exam - 22527

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2. The theory of continental drift has undergone significant changes due to advances in technology and subsequent since it was first posed in

       500 B.C.


3. Which of the following forms of evidence was used to formulate Wegener's theory of Continental Drift?

       the jigsaw-like pattern of continental coastlines
       magnetism of the ocean basin rocks
       discovery of the Mid-Atlantic Ridge
       radiometric dating of the basaltic rocks


4. What form of technology first allowed researchers to confirm that the Mid-Atlantic Ridge exists? 

       topographic maps of the ocean floor
       remote sensing via satellite


5. Earthquakes are known to occur at the following type of tectonic plate boundary

       all of the above


6. The scale for measuring the intensity of earthquakes was invented by

       Francis Bacon
       Charles Richter
       Alfred Wegener
       Isaac Newton
       Albert Einstein


7. _____ waves cannot pass through ____ substances. Mapping the locations where these and other waves transmitted following an earthquake allows for the determining the layers of the _____, as well as the epicenter of an earthquake.

       Compressional / solid / earth
       Shear / liquid / earth
       Compressional / solid / atmosphere
       Shear / liquid / atmosphere


8. The following field of science studies the waves of movement in the crust of the Earth:

       plate tectonics


9. A seismic wave in which the molecules in the rock move back and forth in the same direction as the wave is called



10. Which piece of evidence was not used to support of the theory of plate tectonics?

       ages of rocks
       magnetic properties of ocean floor materials
       ocean floor topography
       measurements from radio astronomy


11. Through the use of topographic mapping of the ocean floor, deep fissures in the ocean bottom can be located. These fissures are called

       fault lines
       the oceanic deep
       a convergent zone
       a divergent zone


12. Seismographs can measure the movement that emanates from an earthquake. This movement is called a

       quake wave
       seismic wave
       fault wave
       tectonic wave
       magma wave


13. The study of paleomagnetism and the reversals of rocks supports

       continental drift


14. Which of the following show the order of technological developments related to studying seismology and plate tectonics?

       Seismographs, Topographic maps of the ocean floor, Paleomagnetism, Radio Astronomy, Seismic Tomography
       Radio Astronomy, Paleomagnetism, Topographic maps of the ocean floor,
Seismic Tomography, Seismographs
       Seismographs, Paleomagnetism, Seismic Tomography, Topographic maps of the ocean floor, Radio Astronomy
       Topographic maps of the ocean floor, Seismic Tomography, Paleomagnetism, Radio Astronomy, Seismographs


15. Which of the following was used as evidence for plate tectonics?

       topographic profiles of the ocean floors
       maps on rock magnetism
       data classifying rocks by age
       sea floor spreading
       all of these are correct


16. Which of the following correctly describes earthquakes?

       Earthquakes are an abrupt release of energy.
       Prediction of earthquakes is an established science, which gives global citizens a chance to evacuate ahead of time.
       Earthquakes have never occurred in the middle of the USA.
       No earthquake has been measured higher than 7 on the Richter scale.
       All earthquakes happen within one kilometer of the Earth's surface.


17. What evidence convinced most scientists to accept the theory of plate tectonics?

       ocean topography
       magnetism of the ocean basin rocks
       discovery of the Mid-Atlantic Ridge
       radiometric dating of the basaltic rocks
       all of these are correct


18. What causes the 'Ring of Fire,' which borders much of thePacific Ocean?

       plate subduction
       divergent plates
       sea-floor spreading
       transform plate motion
       all of these are correct


19. Which of these waves is classified as a type of seismic wave following earthquakes?

       shear waves
       all of these are correct


20. What is the force that moves continents and tectonic plates?

       convection cells
       mantle convection
       radioactive decay
       heat energy left from the great bombardment
       all of these are correct


21. Divergent plate boundaries are associated with

       seafloor spreading.
       formation of new crust.
       volcanic action.
       shallow, low-energy earthquakes.
       all of these are correct


22. Which of the following is an example of a continental convergent plate boundary?

       the East African Rift Valley
       the San Andreas Fault
       the Atlantic east coast fall line
       Mount St. Helens in the northwest United States
       the Himalayan Mountains


23. The only currently active plate boundary within the continentalUnited States is the

       Marianas Trench.
       East-Pacific Rise.
       New Madrid Fault.
       San Andreas Fault.
       Mid-Atlantic Ridge.


24. The transform plate boundaries

       form new material at rates exceeding that of the divergent plate boundaries.
       are the location of island arcs and hot spots.
       created the Andes Mountains in South America.
       are exemplified by the San Andreas fault.
       are sites of major volcano ranges.


25. The magnetic patterns from seafloor data

       were created by magnetite in lava flows.
       are caused by hot spots.
       are indicators of past and future earthquake sites.
       have no one explanation accepted by scientists.
       always run perpendicular to the equator.


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