Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Bombs, ash, and cinders are all examples of
____________.
a. | intrusive igneous rocks | b. | hot-spots | c. | volatiles | d. | pyroclastic
debris |
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2.
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All other factors being equal, intrusive rocks that
form deep within Earth ____________ than intrusive rocks that cool near the surface.
a. | are more felsic | b. | contain a smaller proportion of volatiles | c. | cool more slowly | d. | cool more
rapidly |
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3.
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Bowen’s continuous reaction series describes
the crystallization behavior of a single mineral (with variable chemical composition),
____________.
a. | olivine | b. | plagioclase | c. | pyroxene | d. | quartz |
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4.
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Which soil horizon has the greatest proportion of
organic matter?
a. | A-horizon | b. | B-horizon | c. | C-horizon | d. | O-horizon |
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5.
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Cemented shells of marine organisms form which kind
of sedimentary rock?
a. | biochemical | b. | clastic | c. | organic |
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6.
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As compared to arkose, quartz sandstone
____________.
a. | is more mature | b. | does not contain significant amounts of feldspar | c. | is likely to be found farther away from weathering granitic source
rock | d. | all of the above |
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7.
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A clastic rock comprised of sand-sized grains
derived from the physical weathering of granite and containing a sizable proportion of feldspar is
termed ____________.
a. | metasandstone | b. | lithosandstone | c. | graywacke | d. | arkose |
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8.
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A sandstone with a large proportion of feldspar due
to physical weathering of granite is more precisely termed a(n) ____________.
a. | arkose | b. | breccia | c. | greywacke | d. | wacke |
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9.
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Flint, once commonly used to form arrowheads, is a
____________.
a. | red variety of biochemical
limestone | b. | black variety of biochemical
chert | c. | black variety of replacement
chert | d. | black variety of chemical
limestone |
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10.
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Which type of sediment settles at greater fluid
velocities than sand?
a. | clay | b. | gravel | c. | mud | d. | silt |
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11.
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Loose, weathered sediment at the surface that has
not been organically altered is termed ____________.
a. | soil | b. | A-horizon | c. | O-horizon | d. | regolith |
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12.
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The protolith subjected to metamorphism
____________.
a. | is always metamorphic rock to begin
with | b. | is always igneous rock | c. | is always sedimentary rock | d. | may belong to any of the three primary rock
types |
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13.
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Gneiss typically forms under higher pressures than
hornfels.
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