Plate Tectonics Assessment Noel Pd 8

43 Questions | Total Attempts: 36

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Plate Tectonics Assessment Noel Pd 8

Questions and Answers
  • 1. 
    The youngest rocks on the ocean floor are located _____________.
    • A. 

      Near the continents

    • B. 

      At the mid-ocean ridges

    • C. 

      Far from the mid-ocean ridges

    • D. 

      Near Asia

  • 2. 
    The crust and upper mantle make up Earth's ____________
    • A. 

      Lithosphere

    • B. 

      Asthenosphere

    • C. 

      Core

    • D. 

      Continents

  • 3. 
    Plates move apart at ____________ boundaries
    • A. 

      Convergent

    • B. 

      Stable

    • C. 

      Divergent

    • D. 

      Transform

  • 4. 
    A lack of explanation for continental drift prevented many scientists from accepting that a single supercontinent called _________________ once existed.
    • A. 

      Glomar

    • B. 

      Glossopteris

    • C. 

      Pangaea

    • D. 

      Wegener

  • 5. 
    Plates slide past one another at ______________.
    • A. 

      Subduction zones

    • B. 

      Transform Boundaries

    • C. 

      Convection Currents

    • D. 

      Divergent Boundaries

  • 6. 
    Seafloor spreading occurs because ____________.
    • A. 

      New material is being added to the asthenosphere

    • B. 

      Earthquakes break apart the ocean floor

    • C. 

      Sediments accumulate at the area of spreading

    • D. 

      Molten material beneath Earth's crust rises to the surface

  • 7. 
    Wegner believed that the continents originally broke apart about ___________ years ago.
    • A. 

      200 Million

    • B. 

      300 Million

    • C. 

      400 Million

    • D. 

      500 Million

  • 8. 
    A fossil plant that helps support the theory of continental drift is ____________.
    • A. 

      Mesosaurus

    • B. 

      Glossopteris

  • 9. 
    Bands of rock on the seafloor showing alternating magnetic orientation indicate Earth's magnetic field has __________.
    • A. 

      Reversed itself in the past

    • B. 

      Weakened

    • C. 

      Become stronger

    • D. 

      Retained the same

  • 10. 
    A _______ is a sensitive device used to detect magnetic fields on the seafloor.
    • A. 

      Seismometer

    • B. 

      Magnetometer

    • C. 

      Geologist's Compass

  • 11. 
    Scientists believe that differences in _____ cause hot, plasticlike rock in the asthenosphere to rise toward Earth's surface.
    • A. 

      Density

    • B. 

      Magnetism

  • 12. 
    In order to complete a convection current, the rising material must eventually _________ Earth.
    • A. 

      Stop inside the

    • B. 

      Cool the

    • C. 

      Sink Back Into

    • D. 

      Warm

  • 13. 
    The Great Rift Valley in Africa is a ____________.
    • A. 

      Transform Boundary

    • B. 

      Divergent Boundary

    • C. 

      Convergent Boundary

  • 14. 
    The Andes mountain range of South America was formed at a ________.
    • A. 

      Convergent Boundary

    • B. 

      Divergent Boundary

    • C. 

      Hot Spot

    • D. 

      Transforming Boundary

  • 15. 
    ______ are formed when two continental plates collide.
    • A. 

      Volcanoes

    • B. 

      Strike-Slip faults

    • C. 

      Mountain Ranges

    • D. 

      Rift Valleys

  • 16. 
    The _______ is an example of a transform boundary.
    • A. 

      Appalachian Mountains

    • B. 

      Himalaya

    • C. 

      Mid-ocean Ridge

    • D. 

      San Andreas Fault

  • 17. 
    A __________ forms where two oceanic plates collide.
    • A. 

      Rift Valley

    • B. 

      Subduction Zone

    • C. 

      Transform Boundary

  • 18. 
    What type of boundary occurs between the North American Plate and the Eurasian Plate?
    • A. 

      Transform Boundary

    • B. 

      Divergent Boundary

    • C. 

      Convergent oceanic-continental plate boundary

    • D. 

      Convergent oceanic-oceanic plate boundary

  • 19. 
    The name ______________ comes from two words that mean "all land"
    • A. 

      Seafloor

    • B. 

      Pangaea

    • C. 

      Continents

    • D. 

      Lithosphere

  • 20. 
    A(n) ________________ is an underwater mountain chain.
    • A. 

      Mid-ocean ridge

    • B. 

      Convergent Boundary

  • 21. 
    New seafloor rock is continually being formed at mid-ocean ridges and old seafloor is continually removed at ocean trenches.  If the rock on the continents is continually formed but not removed, how would the age of the oldest rocks on the continents compare with the age of the oldest rocks on the seafloor?
    • A. 

      Seafloor and Continent are the SAME age

    • B. 

      Seafloor is OLDER than the continent

    • C. 

      Continent is OLDER than the seafloor

  • 22. 
    Which of the following examples (moving away from the mid-ocean ridge) is best represented by the diagram?
    • A. 

      Magnetic north and Geographic north have always aligned

    • B. 

      Magnetic north and Geographic south have always aligned

    • C. 

      Magnetic north alternates between the geographic north and south poles

    • D. 

      There has never been a changed in the magnetic north pole

  • 23. 
    Where is the oldest rock on the seafloor located?
    • A. 

      At the Mid-ocean ridge

    • B. 

      Far from the Mid-ocean ridge

    • C. 

      Half way between the mid-ocean ridge and a trench

  • 24. 
    What type of plate boundary is represented in each of these pictures?
    • A. 

      Divergent

    • B. 

      Convergent

    • C. 

      Transform

  • 25. 
    What living fossil attempted to help Alfred Wegener convice other scientist that the theory of plate tectonics was real?
    • A. 

      Mr. Reed

    • B. 

      Jimmy Buffet

    • C. 

      Harrison Ford

    • D. 

      Rex Morgan

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