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    SC300 UNIT3 EXAM/ SC300 UNIT3 EXAM (25/25)

    1. The theory of continental drift was first proposed by (Points : 3)

    Francis Bacon

    Charles Richter

    Alfred Wegener

    Isaac Newton

    Albert Einstein

    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?

    1. the jigsaw-like pattern of continental coastlines

    2. magnetism of the ocean basin rocks

    3. discovery of the Mid-Atlantic Ridge

    4. 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 the Pacific 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

    22. Divergent plate boundaries are associated with

    seafloor spreading

    formation of new crust

    volcanic action

    shallow, low-energy earthquakes

    all of these are correct

    23. 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 continental United 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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