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GEL1010 CH 2,10,11 Mountains & Plates

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

All of the following are evidence supporting the theory of plate tectonics EXCEPT for ________.
a.
changes in the Moon's orbit due to shifting plates
b.
hot spots
c.
ocean floor drilling
d.
paleomagnetism
 

 2. 

Which one of the following is an important fundamental assumption underlying the plate tectonic theory?
a.
Earth's ocean basins are very old and stable features.
b.
Earth's diameter has been essentially constant over time.
c.
Radioactive decay slows down at the extreme pressures of the inner core.
d.
Earth's magnetic field originates in the outer core.
 

 3. 

A transform plate boundary is characterized by ________.
a.
stratovolcanoes on the edge of a plate and shield volcanoes on the adjacent plate
b.
a deep, vertical fault along which two plates slide past one another in opposite directions
c.
two converging oceanic plates meeting head-on and piling up into a mid-ocean ridge
d.
a divergent boundary where the continental plate changes to an oceanic plate
 

 4. 

Seamounts ________.
a.
form only in the Pacific Ocean basin
b.
are a special type of oceanic trench
c.
are volcanoes that form on the ocean floor
d.
are submarine canyons found near Australia
 

 5. 

Where in the oceans are biological communities thriving without sunlight?
a.
around fissure vents for flood basalts
c.
in shallow water, coral reefs
b.
in muds of deep-ocean trenches
d.
around seafloor, hot spring vents
 

 6. 

The Black Hills of South Dakota are a good example of a(n) ________.
a.
basin
c.
syncline
b.
anticline
d.
dome
 

 7. 

A(n) ________ fault has little or no vertical movements of the two blocks.
a.
strike slip
c.
dip slip
b.
stick slip
d.
oblique slip
 

 8. 

A transform fault is ________.
a.
the rift bounding faults on a mid-ocean ridge
b.
a dip-slip fault connecting an anticline with a syncline
c.
a strike-slip fault that forms the boundary between tectonic plates
d.
a reverse fault that steepens into a thrust fault
 

 9. 

A horst is ________.
a.
a downdropped block bounded by two reverse faults
b.
an uplifted block bounded by two reverse faults
c.
a downdropped block bounded by two normal faults
d.
an uplifted block bounded by two normal faults
 

 10. 

The ________ are a geologically old mountain range folded and deformed during the Paleozoic.
a.
Alps in Europe
b.
Rockies in the western United States
c.
Appalachians in the eastern United States
d.
Cascades in the northwestern United States
 

One Word Completion / One Word Answer
Complete or answer each statement by typing only one word. Answer numbers as text..
 

 11. 

A(n) ________ marks the site where old, oceanic lithosphere begins its descent into a subduction zone.
 

 

 12. 

A low lying, coral limestone island with a central lagoon is called a(n) ________.
 

 

 13. 

A(n) ________ fault develops in response to horizontal, tensional stresses in crustal rocks.
 

 

 14. 

The ________ mountains in North America were formed by a continent-continent collision in the Paleozoic.
 

 

 15. 

Any accreted crustal fragment that has a geologic history distinct from that of the adjoining fragments is termed a(n) ________.
 

 



 
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