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Online Quiz
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1
Compressive stress
A)occurs at oceanic ridges
B)occurs at subduction zones
C)causes normal faults
D)causes strike-slip faults
2
Where are rocks most likely to strain in a plastic fashion?
A)crust
B)asthenosphere
C)continental lithosphere
D)oceanic lithosphere
3
Shearing stress occurs at
A)spreading centers
B)subduction zones
C)oceanic ridges
D)transfrom faults
4
The driving force or mechanism that causes seafloor spreading and continental drift
A)the earth's rotation
B)circulation of the liquid core
C)magnetic reversals
D)convection of the asthenosphere
5
Geologists believe that India was located far south of the equator in Late Paleozoic time. Why?
A)lavas of that age in India have high angles of magnetic inclination
B)lavas of that age in India are reversely magnetized
C)lavas of that age in India are normally magnetized
D)lavas of that age in India have low angles of magnetic inclination
6
Paleomagnetic inclinations of rocks of all ages from Antarctica are always high angles (near 90 degrees). This means that
A)no magnetic reversals have occurred
B)that Antarctica has never drifted far from the south pole
C)Antarctica has drifted from the north pole to the south pole
D)no seafloor spreading has occurred around Antarctica
7
A volcanic island arc forms where
A)oceanic lithosphere is subducted beneath oceanic lithosphere
B)new oceanic lithosphere forms due to divergence
C)a mantle hot spot underlies oceanic lithosphere
D)continental lithosphere converges with continental lithosphere
8
The Himalaya Mountains are the result of
A)convergence of two plates of oceanic lithosphere
B)convergence of continental lithosphere with oceanic lithosphere
C)convergence of two plates of continental lithosphere
D)continental rifting
9
No subduction occurs during
A)ocean-ocean convergence
B)continent-continent convergence
C)continent-ocean convergence
D)all of the above
10
The supercontinent Pangaea was split apart by
A)subduction
B)convergence
C)rifting
D)all of the above
11
Volcanoes of the Andes Mountains are a direct result of
A)continental rifting
B)subduction
C)divergence
D)transform faulting
12
Reversals of earth's magnetic field in the past have caused
A)seafloor spreading
B)polar wandering
C)seafloor magnetic stripes
D)continental drift
13
The San Andreas Fault is a
A)convergent plate boundary
B)divergent plate boundary
C)magmatic arc
D)transform fault
14
Which of the following is not a type of plate boundary?
A)continental shelf
B)transform fault
C)subduction zone
D)spreading center
15
Subduction zones occur where
A)oceanic lithosphere is forced beneath oceanic lithosphere
B)new oceanic lithosphere is formed from basaltic lavas
C)continental lithosphere is forced beneath oceanic lithosphere
D)all of the above
16
Lithospheric plates move approximately
A)0.1 to 1.0 millimeters per year
B)1 to 10 meters per year
C)1 to 10 centimeters per year
D)1 to 10 kilometers per year
17
The Hawaiian volcanoes occur
A)at a spreading center
B)at a convergent plate boundary
C)over a mantle hot spot
D)over a subduction zone
18
Pangaea was
A)an ancient seaway
B)a dinosaur
C)a supercontinent
D)a mountain range
19
New oceanic lithosphere forms at
A)divergent plate boundaries
B)convergent plate boundaries
C)transform faults
D)all of the above
20
The magnetic dip of lava erupted at the north pole is
A)45 degrees
B)90 degrees (vertical)
C)60 degrees
D)0 degrees (horizontal)
21
The earliest known evidence for continental drift was
A)seafloor magnetic anomalies
B)the jigsaw puzzle fit of continental margins
C)the existence of oceanic ridges
D)the distribution of volcanoes





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