Plate Tectonics Assessment Mcfadden Period 2 2015

45 Questions | Total Attempts: 34

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Plate Tectonics Quizzes & Trivia

Questions and Answers
  • 1. 
    ______ currents inside Earth are currently the best explanation for tectonic plate motion.
    • A. 

      Vertical

    • B. 

      Convection

    • C. 

      Horizontal

    • D. 

      None of the answers are correct

  • 2. 
    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

  • 3. 
    The crust and upper mantle make up Earth's ____________
    • A. 

      Lithosphere

    • B. 

      Asthenosphere

    • C. 

      Core

    • D. 

      Continents

  • 4. 
    Scientists have observed that the plates move at rates ranging from 2 cm to 12 cm per ________.
    • A. 

      Century

    • B. 

      Decade

    • C. 

      Day

    • D. 

      Year

  • 5. 
    Plates of the lithosphere float on the  ____________.
    • A. 

      Crust

    • B. 

      Asthenosphere

    • C. 

      Core

    • D. 

      Atmosphere

  • 6. 
    The _________are mountains formed when India collided into the Eurasian Plate.
    • A. 

      Alps

    • B. 

      Rockies

    • C. 

      Himalaya

    • D. 

      Appalachian

  • 7. 
    The presence of the same ___________on several continents supports the hypothesis of continental drift.
    • A. 

      Fossils

    • B. 

      Rock Structure

    • C. 

      Both fossil and rock structures

  • 8. 
    Plates move apart at ____________ boundaries
    • A. 

      Convergent

    • B. 

      Stable

    • C. 

      Divergent

    • D. 

      Transform

  • 9. 
    The alignment of the magnetite in the seafloor reflects the fact that Earth's ____________ has reversed itself several times in the past.
    • A. 

      Magnetic Field

    • B. 

      Core

    • C. 

      Asthenosphere

    • D. 

      Gravity

  • 10. 
    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

  • 11. 
    The Glomar Challenger provided support for the theory of plate tectonics by collecting ____.
    • A. 

      High Altitude photos of existing continents

    • B. 

      Samples of plant life from mid-ocean ridges

    • C. 

      Samples of rock from the seafloor

    • D. 

      Direct measurements of the movement of continents

  • 12. 
    Plates slide past one another at ______________.
    • A. 

      Divergent Boundaries

    • B. 

      Transform Boundaries

    • C. 

      Convergent Boundaries

  • 13. 
    The boundary between two plates colliding together is called a(n) ___________.
    • A. 

      Divergent Boundary

    • B. 

      Convergent Boundary

    • C. 

      Transform Boundary

  • 14. 
    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 at the mid-ocean ridge

  • 15. 
    Continental drift states that continents have moved _______ to their current location.
    • A. 

      Vertically

    • B. 

      Slowly

    • C. 

      Quickly

    • D. 

      Very Little

  • 16. 
    Wegner believed that the continents originally broke apart about ___________ years ago.
    • A. 

      200 Million

    • B. 

      300 Million

    • C. 

      400 Million

    • D. 

      500 Million

  • 17. 
    A fossil plant that helps support the theory of continental drift is ____________.
    • A. 

      Mesosaurus

    • B. 

      Glossopteris

    • C. 

      Glomar

    • D. 

      Pangaea

  • 18. 
    Matching ____________ on different continents are evidence for continental drift.
    • A. 

      River Systems

    • B. 

      Rock Structures

    • C. 

      Wind Systems

  • 19. 
    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

  • 20. 
    A _______ is a sensitive device used to detect magnetic fields on the seafloor.
    • A. 

      Seismometer

    • B. 

      Glomar

    • C. 

      Geologist's Compass

    • D. 

      Magnetometer

  • 21. 
    Scientists believe that differences in _____ cause hot, plasticlike rock in the asthenosphere to rise toward Earth's surface.
    • A. 

      Density

    • B. 

      Magnetism

    • C. 

      Weight

    • D. 

      Composition

  • 22. 
    In order to complete a convection current, the rising material must eventually _________.
    • A. 

      Continue to heat and rise

    • B. 

      Cool and sink

    • C. 

      Remain the same temperature

  • 23. 
    The Great Rift Valley in Africa is a ____________.
    • A. 

      Mid-ocean ridge

    • B. 

      Divergent Boundary

    • C. 

      Convergent Boundary

    • D. 

      Transform Boundary

  • 24. 
    The Andes mountain range of South America was formed at a ________.
    • A. 

      Convergent Boundary

    • B. 

      Divergent Boundary

    • C. 

      Transform Boundary

  • 25. 
    Active volcanoes are most likely to form at ___________.
    • A. 

      Transform Boundary

    • B. 

      Divergent Boundary

    • C. 

      The center of continents

    • D. 

      Convergent oceanic-continental boundaries

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