Eas 2600 Exam 1 Practice

185 Questions | Total Attempts: 15

SettingsSettingsSettings
Practice Exam Quizzes & Trivia

Questions and Answers
  • 1. 
    The composition of the inner core of Earth is thought to be:
    • A. 

      Peridotite

    • B. 

      Solid iron-nickel alloy

    • C. 

      Solid iron-manganese alloy

    • D. 

      Liquid iron-manganese alloy

    • E. 

      Liquid iron-nickel alloy

  • 2. 
    The composition of the mantle is thought to be:
    • A. 

      Iron-nickel alloy

    • B. 

      Felsic, silicate

    • C. 

      Ultramafic, silicate

    • D. 

      Iron-manganese alloy

    • E. 

      All of the above

  • 3. 
    Which of the following energy sources is thought to drive the lateral motions of Earth's lithospheric plates?
    • A. 

      Export of heat from deep in the mantle to the top of the asthenosphere

    • B. 

      Swirling movements of the molten iron particles in the outer core

    • C. 

      Inertial rebound of mantle metal alloys

    • D. 

      Electrical and magnetic fields localized in the inner core

    • E. 

      Gravitational attractive forces of the sun and the moon

  • 4. 
    In correct order from the center outward, Earth includes which units or regions?
    • A. 

      Inner core, outer core, lithosphere, mantle, asthenosphere

    • B. 

      Inner core, outer core, lower mantle, astrosphere, crust

    • C. 

      Inner core, lithosphere, lower mantle, asthenosphere, crust

    • D. 

      Inner core, outer core, lower mantle, asthenosphere, crust

    • E. 

      Inner core, inner mantle, outer core, mantle, asthenosphere, crust

  • 5. 
    Atoms of the same element, scandium for example, always have the same number of:
    • A. 

      Electrons in the nucleus

    • B. 

      Neutrons in the valence bond level

    • C. 

      Protons in the nucleus

    • D. 

      Neutrons in the nucleus

    • E. 

      Electrons in the valence bond level

  • 6. 
    Which one of the following is true for minerals?
    • A. 

      They are inorganic and solid

    • B. 

      They have a specific, internal, crystalline structure

    • C. 

      They have a specific, predictable chemical composition.

    • D. 

      They can be identified by characteristic physical properties.

    • E. 

      All of the above

  • 7. 
    In a normal fault:
    • A. 

      The footwall block above an inclined fault plane moves upward relative to the other block

    • B. 

      The hanging wall block above an inclined fault plane moves downward relative to the other block

    • C. 

      The hanging wall block below an inclined fault plane moves downward relative to the other block

    • D. 

      The hanging wall block above an inclined fault plane moves laterally relative to the other block

    • E. 

      The footwall block below an inclined fault plane moves downward relative to the other block

  • 8. 
    A typical rate of seafloor spreading in the Atlantic Ocean is:
    • A. 

      20 centimeters per year

    • B. 

      0.2 centimeters per year

    • C. 

      0.2 kilometers per year

    • D. 

      2 centimeters per year

    • E. 

      200 centimeters per year

  • 9. 
    ________ refers to the tendency for a foundation material to lose its internal cohesion and fail mechanically during earthquake shaking.
    • A. 

      Liquefaction

    • B. 

      Occultation

    • C. 

      Motion slip

    • D. 

      Seismoflowage

    • E. 

      Slurrying

  • 10. 
    Mount St. Helens is:
    • A. 

      An explosive basaltic shield volcano

    • B. 

      An exposive andesitic shield volcano

    • C. 

      An explosive andesitic stratovolcano

    • D. 

      An explosive ultramafic stratovolcano

    • E. 

      An explosive basaltic cinder cone

  • 11. 
    The lithosphere is defined as:
    • A. 

      A rocky layer having a relatively uniform chemical composition

    • B. 

      A rigid layer of mantle material

    • C. 

      A rocky layer composed mainly of crustal rock

    • D. 

      A plastic layer composed mainly of mantle material

    • E. 

      A rigid layer of crustal and mantle material

  • 12. 
    The most violent volcanic activity is associated with:
    • A. 

      Cinder cones

    • B. 

      Basaltic volcanoes

    • C. 

      Composite cones

    • D. 

      Fissure eruptions

    • E. 

      Shield volcanoes

  • 13. 
    Brittle deformation would be favored over plastic deformation in which of the following conditions?
    • A. 

      Warmer temperatures

    • B. 

      High confining pressures

    • C. 

      Cooler temperatures

    • D. 

      Low confining pressures

    • E. 

      Both: "cooler temperatures" and "low confining pressures"

  • 14. 
    Which of the following combinations should favor folding rather than faulting?
    • A. 

      Low confining pressure and low temperature

    • B. 

      High confining pressure and low temperature

    • C. 

      High temperature and high confining pressure

    • D. 

      High temperature and low confining pressure

    • E. 

      All of the above

  • 15. 
    Which of the following best describes the bedrock in the Sierra Nevada Mountains in California?
    • A. 

      Peridotite; batholith

    • B. 

      Andesite; laccoliths

    • C. 

      Gabbro; plutoliths

    • D. 

      Basalt; dikes

    • E. 

      Granite; batholiths

  • 16. 
    All of the following provide evidence supporting the theory of plate tectonics except for
    • A. 

      Hot spots

    • B. 

      Ocean floor drilling

    • C. 

      Paleomagnetism

    • D. 

      Antarctic volcanism

    • E. 

      Age relations of ocean crust

  • 17. 
    The Icelandic volcanoes are related to plate tectonics because:
    • A. 

      They lie on a spreading center where two plates are moving apart

    • B. 

      They lie along a baroclinic plate margin

    • C. 

      They lie on a spreading center where two plates are converging

    • D. 

      They lie along a subduction zone where two plates are diverging

    • E. 

      They lie on a subduction zone where two plates are converging

  • 18. 
    The ions directly surrounding a silicon atom in the majority of silicate minerals are
    • A. 

      Six sodium ions

    • B. 

      Four sodium ions

    • C. 

      Six oxygen ions

    • D. 

      Four hydrogen ions

    • E. 

      Four oxygen ions

  • 19. 
    Which of the following is NOT one of the eight most common elements in Earth's crust by weight?
    • A. 

      Oxygen

    • B. 

      Iron

    • C. 

      Calcium

    • D. 

      Sulfur

    • E. 

      Magnesium

  • 20. 
    A good example of a present-day, passive continental margin is the ________
    • A. 

      East coast of North America

    • B. 

      North flank of the East Pacific Rise

    • C. 

      East coast of the Japanese Islands

    • D. 

      West coast of South America

    • E. 

      South coast of the Aleutian Islands

  • 21. 
    Kilauea is an example of a ________
    • A. 

      Lava dome

    • B. 

      Volcanic neck

    • C. 

      Batholith

    • D. 

      Cinder cone

    • E. 

      Shield volcano

  • 22. 
    The broad looping patterns seen in the geologic map of the northwest corner of Georgia represent
    • A. 

      Normal fault bounded rock units

    • B. 

      A series of plunging anticlines and synclines

    • C. 

      A series of fault block mountains

    • D. 

      Volcanic ash beds

    • E. 

      Igneous intrusive bodies

  • 23. 
    Which of the following arrangements of silicon tetrahedra are found in pyroxene group minerals?
    • A. 

      Double chains

    • B. 

      Sheet

    • C. 

      Framework

    • D. 

      Isolated

    • E. 

      Single chains

  • 24. 
    Which one of the following best describes volcanism in the Cascade Range, northwestern United States?
    • A. 

      Related to a mantle hot spot

    • B. 

      Related to plate subduction

    • C. 

      Related to a mid-oceanic ridge system

    • D. 

      Related to a continental rift zone

    • E. 

      Related to deep, transform faults

  • 25. 
    Large circular downwarped structures are called:
    • A. 

      Anticlines

    • B. 

      Synclines

    • C. 

      Horsts

    • D. 

      Basins

    • E. 

      Domes

Back to Top Back to top