Volcano Assessment Noel Pd 4

34 Questions | Total Attempts: 23

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Volcano Assessment Noel Pd 4

Questions and Answers
  • 1. 
    Today,  people are never likely to be killed by a volcano.
    • A. 

      True

    • B. 

      False

  • 2. 
    Volcanoes can form on the ocean floor.
    • A. 

      True

    • B. 

      False

  • 3. 
    There is no relationship between plate tectonics and volcanoes.
    • A. 

      True

    • B. 

      False

  • 4. 
    Gas trapped in magma under high pressure can cause explosive eruptions.
    • A. 

      True

    • B. 

      False

  • 5. 
    Cinder cone volcanoes produce quiet eruptions.
    • A. 

      True

    • B. 

      False

  • 6. 
    Kilauea in Hawaii is the world's most _________ volcano.
    • A. 

      Dormant

    • B. 

      Active

    • C. 

      Explosive

    • D. 

      All the possibilities

  • 7. 
    One factor that determines whether a volcanic erupton will be quiet or explosive is _________________.
    • A. 

      The number of cinder cones

    • B. 

      The height of the volcano's neck

    • C. 

      The amount of water vapor and other trapped gases in the magma

    • D. 

      The amount of tephra in the magma

  • 8. 
    Devil's Tower in Wyoming is an example of a ____________________.
    • A. 

      Caldera

    • B. 

      Volcanic neck

    • C. 

      Dike

    • D. 

      Batholith

  • 9. 
    In 1990, lava from ______________ covered most of a town in Hawaii.
    • A. 

      Kilauea

    • B. 

      Mount Pelee

    • C. 

      Mount St. Helens

    • D. 

      Mount Pinatubo

  • 10. 
    More than _______________ of Earth's volcanoes are currently active.
    • A. 

      100

    • B. 

      1500

    • C. 

      600

  • 11. 
    Magma forms deep inside Earth because of _________________.
    • A. 

      A rise in temperature and a drop in pressure

    • B. 

      A drop in temperature and a rise in pressure

    • C. 

      A rise in temperature and increase in pressure

    • D. 

      A drop in temperature and a drop in pressure

  • 12. 
    Some volcanoes form islands as __________ flows from the rifts in the seafloor and builds up high enough to break the ocean's surface.
    • A. 

      Lava

    • B. 

      Tephra

    • C. 

      Water

    • D. 

      Gas

  • 13. 
    Magma that squeezes into a horizontal crack between rock layers and hardens is called a __________
    • A. 

      Dike

    • B. 

      Batholith

    • C. 

      Sill

    • D. 

      Volcanic neck

  • 14. 
    If, after an eruption, the top of a volcano collapses down, a __________ forms.
    • A. 

      Caldera

    • B. 

      Vent

    • C. 

      Crater

    • D. 

      Volcanic neck

  • 15. 
    Differences in _______________ cause a volcanic neck to form.
    • A. 

      Eruptive forces

    • B. 

      Water content

    • C. 

      Resistance to erosion

    • D. 

      Silica content

  • 16. 
    Most of the rock in Yosemite National Park is an exposed _________________.
    • A. 

      Dike

    • B. 

      Sill

    • C. 

      Batholith

    • D. 

      Volcanic neck

  • 17. 
    Basaltic magma produces nonexplosive eruptions such as those at ___________________.
    • A. 

      Mount St. Helens

    • B. 

      Mount Pinatubo

    • C. 

      Kilauea

    • D. 

      Paracutin

  • 18. 
    A steep walled depression around a volcano's vent is called a _______________.
    • A. 

      Caldera

    • B. 

      Crater

    • C. 

      Volcanic neck

    • D. 

      Dike

  • 19. 
    Parcutin, in Mexico, is a __________________ volcano.
    • A. 

      Composite

    • B. 

      Shield

    • C. 

      Cinder cone

    • D. 

      Hot spot

  • 20. 
    Soufriere Hills volcano, in Montserrat, is a ______________ volcano.
    • A. 

      Shield

    • B. 

      Cinder cone

    • C. 

      Hot spot

    • D. 

      Composite

  • 21. 
    Silica rich magma______________
    • A. 

      Can form at subduction zones

    • B. 

      Produces explosive eruptions

    • C. 

      Is thick and gas gets trapped, causing pressure to build up

    • D. 

      All the possibilities

  • 22. 
    ____________ magma is silica poor and causes quiet, nonexplosive eruptions.
    • A. 

      Basaltic

    • B. 

      Andesitic

    • C. 

      Granitic

  • 23. 
    ____________ magma has a moderate amount of silica and can create composite cone volcanoes.
    • A. 

      Basaltic

    • B. 

      Andesitic

    • C. 

      Granitic

  • 24. 
    Pahoehoe and AA lavas are both ____________________.
    • A. 

      Basaltic

    • B. 

      Andesitic

    • C. 

      Granitic

  • 25. 
    The figure below represents a _________________ volcano.
    • A. 

      Cinder cone

    • B. 

      Composite cone

    • C. 

      Shield volcano

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