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Question What is the dominant type of bonding
found in minerals? |
Answer |
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a) metallic bonding |
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b) nuclear bonding |
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c) ionic bonding |
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d) covalent bonding
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Question Earthquakes recorded at depths greater
than 100 km are caused by cool old brittle plates that have been taken
down into the mantle by a process called "subduction" |
Answer |
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A. True |
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B. False |
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Question In plate tectonics individual plates
are defined solely by composition. |
Answer |
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A. True |
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B. False |
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Question A new planet is found in a nearby
solar system and you are asked to determine whether or not the planet
is alive. Which of the following indicators suggest the planet is in
fact alive? |
Answer |
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A. The planet has an electromagnetic field |
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B. The planet possesses an atmosphere |
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C. Initial satellite pictures show areas of high and low
topography
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D. All of the above |
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E.None of the above
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Question Why do we say that the Earth’s
magnetic field is fossilized in the rocks of the oceanic crust? |
Answer |
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A. Because the magnetic minerals present in the rocks of the
oceanic crust record the current magnetic field. |
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B. Because the magnetic minerals in the rocks of the oceanic
crust record the magnetic field present at the time they cooled
below their Curie temperature. |
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C. Because the magnetic minerals in the rocks of the oceanic
crust record the magnetic field present at the time they heat
above their Curie temperature.
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D. None of above
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Question A mineral is found and examined. The
type of bonding between atoms is not known, but the mineral shows good
cleavage. As an earth scientist you would predict: |
Answer |
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a) The mineral most likely has low bond strength between atoms
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b) The bond strength can not be determined |
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c) The mineral most likely has a very high bond strength
between atoms
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d) None of the above
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Question Why do we use Hot-spots as a reference
to measure the movement of tectonic plates? |
Answer |
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A. Because we suppose that they are fixed to the core and that
the core does not move. |
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B. Because they occur both, at oceanic crust and continental
crust.
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C. Because Hot-spots form volcanic islands in the middle of
the ocean (like Hawaii). |
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D. None of above
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Question The theory of continental drift is
best supported by which of the following pieces of evidence? |
Answer |
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A. Matching ancient rock assemblages across continents |
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B. Matching ancient fossils across continents |
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C. Matching ancient earthquake evidence across continents
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D. A and C only |
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E. A and B only |
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F. All of the Above
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Question Look at Figure 2.14 from chapter 2 of
your textbook. This figure represents the same plate tectonic boundary
conditions found in which of the following localities around the
world? |
Answer |
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a) East coast of North America |
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b) Northwestern coast of North America |
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c) West coast of South America |
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d) West coast of Africa |
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e) East coast of South America |
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f) A and E only |
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g) B and C only |
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h) All of the above
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Question In general, can continental crust be
subducted into the lowermost mantle? |
Answer |
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A. No, because continental crust is of too low a density to
sink into the mantle |
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B. Yes, because continental crust is pulled down by the rest
of the plate
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C. No, because oceanic continental crust is almost never found
at a divergent boundary |
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D. None of the above
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