Ch.17

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agg0006
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288791
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Ch.17
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2014-11-10 12:46:07
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Notes for science
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  1. The Pacific coastline is found
    near a subduction zone.
  2. Which of the following was used as evidence for
    plate tectonics?
    topographic profiles of the ocean floors

    b. maps on rock magnetism

    c. data classifying rocks by age

    d. sea floor spreading

    e. all of the above
  3. The magnetic pattern from seafloor data recorded off the
    coast of Vancouver and Washington State
    were created by magnetite in fissure flows
  4. The continents of Eurasia and North America are currently
    moving apart at an average rate of
    5 cm per year
  5. Which of the following describes earthquakes?
    Earthquakes are an abrupt release of energy
  6. The North American Plate
    • extends from the middle of the Atlantic Ocean to
    • the edge of the Pacific Plate
  7. Which of the following is an example of a
    continental convergent plant boundary?
    the Himalayan Mountains
  8. Divergent plate boundaries are associated with
    a. seafloor spreading.

    b. formation of new crust.

    c. volcanic action.

    d. shallow, low-energy earthquakes.
  9. . How often does the oceanic plate material of
    the Earth renew itself; i.e., go through one
    every 200 million years
  10. The transform plate boundaries
    are exemplified by the San Andreas fault
  11. Where is the longest mountain range on Earth?
    Mid-Atlantic Ocean Ridge
  12. Which formula would you use to determine the
    age of the Atlantic Ocean basin
    D = R T.
  13. What evidence convinced most scientists to
    accept the theory of plate tectonics?
    a.ocean topography

    b. magnetism of the ocean basin rocks

    c. discovery of the Mid-Atlantic Rift zone

    d. radiometric dating of the basaltic rocks
  14. What causes the Ring of Fire, which borders much
    of the Pacific Ocean?
    plate subduction
  15. Which of these waves is classified as a type of
    seismic wave following earthquakes?
    a. transverse

    b. compressional

    c. longitudinal

    d. shear waves
  16. Mountains on the Earth are continuously being
    formed
    t
  17. Energy from earthquakes is transmitted as light waves.
    f
  18. A philosopher and a meteorologist laid the groundwork for
    the idea of moving continents.
    t
  19. Evidence for Earth's magnetic reversals has been
    found in the East African Rift Zone.
    f
  20. An earthquake with a magnitude 7 on the Richter Scale
    releases 100 times the energy of an earthquake with a magnitude 5.
    t
  21. The ocean floor is a flat plain collecting sediments from
    the continents.
    f
  22. Rocks collected at the Mid-Atlantic Ridge and dated with
    radioactive isotopes are among the oldest rocks on earth.
    f
  23. Tidal waves come as frequently as the tides.
    f
  24. Man may have evolved his upright stance from a
    need to adapt to divergent plate boundaries.
    t
  25. The Appalachian Mountains are among the youngest
    on Earth
    f
  26. The specific surface features created by convergent plate
    boundaries depend on whether the plates are continental or oceanic.
    t
  27. The speed of a seismic wave depends partly on
    the type of seismic wave that is moving
    t
  28. What is always characteristic of a tectonic
    plate?
    comprised of crust and some mantle material
  29. Subduction zone regions are often the locations
    of
    a. active volcanoes.

    b. the disappearance of old plate material.

    c. the world's highest mountains.

    d. severe earthquakes.
  30. What is the force that moves continents and
    tectonic plates?
    • a. convection
    • cells

    • b. mantle
    • convection

    c. radioactive decay

    d. heat energy left from the great bombardment
  31. Most
    mountains have not eroded to a flat plain in the last 500,000 years because
    • mountains are reformed by tectonic uplift that
    • is greater than or equal to the erosional forces
  32. If you took a vacation driving to the oldest part of the
    North American continent you would need to bring a map of
    northeastern Canada.
  33. The only currently active plate boundary within
    the continental United States is the
    San Andreas Fault.
  34. Which of the following would not be seen in the
    United States?
    an old spreading "rift" plate boundary
  35. What part of the Hawaiian Island chain is the oldest?
    northwest
  36. The difference between continental and ocean
    basin rock is
    • ocean rocks are basaltic and continental rocks
    • are granitic
  37. Earthquakes that measure around 8 on the Richter
    scale can be felt by most people but do little damage to buildings
    f
  38. The Grand Canyon is an example of what happens when two
    tectonic plates scrape past each other.
    f
  39. Compared to the oceanic plates, the continental
    plates are thicker and comprised of lower-density rock.
    t

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