Which statement below is true about oceanic crust in comparison to continental crust?
a. Oceanic crust is thinner and heavier (higher specific gravity).
b. Oceanic crust is thicker and heavier (higher specific gravity).
c. Oceanic crust is thinner and lighter (lower specific gravity).
d. Oceanic crust is thicker and lighter (lower specific gravity).
e. Oceanic crust is heavier and has about the same thickness
Q. 2 -
What does a Benioff-Wadati zone refer to?
a. an area of extensional stress
b. a subduction zone
c. a transform plate boundary
d. an area of high heat flow
e. an area lacking deep earthquakes
Q. 3 -
Which of the following countries is the locality of the oldest know intact terrestrial rocks?
a. China
b. Australia
c. Brazil
d. Canada
e. Sweden
Q. 4 -
What type of plate boundary is the San Andreas Fault?
a. convergent
b. divergent
c. transform
d. passive
e. none of the choices
Q. 5 -
What force is thought to be an important cause of plate tectonic motion?
a. Earth tides
b. earthquakes
c. thermal convection currents
d. shear strain
e. volcanic eruptions
Q. 6 -
At what type of plate boundary do compression and subduction take place?
a. divergent
b. convergent
c. emergent
d. passive
e. transform
Q. 7 -
Which of the following is a type of plate boundary where new seafloor is formed?
a. divergent
b. convergent
c. emergent
d. passive
e. transform
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