GEOL 1121 Final Exam Douglas Crowe
With Complete Solutions
what portion of the earth behave's elastically? - ANSWER lithosphere
what are the requirements for minerals? - ANSWER inorganic, naturally occuring, solid
subduction zones are characterized by - ANSWER lots of volcanism and seismicity
if three half lives of an unstable (radiogenic) isotope go by, what fraction of the original
parent isotope is left? - ANSWER 1/8
the driving force behind many/most of Earth's environmental problems are related to -
ANSWER our huge human population
the principle of superposition states that - ANSWER in an undisturbed sequence of
sedimentary rocks, the oldest rocks are on the bottom
cities endangered by being a volcanic hazard zone - ANSWER Hawaii, Seattle,
Anchorage
an intrusive igneous rock containing mostly olivine and Ca-plagioclase feldspar is -
ANSWER gabbro
identical fossils found in two outcrops a great distance from one another can be used to
establish the relative ages of the two crops by applying the - ANSWER Principle of
Faunal Succession
processes that contribute to the heating of the early earth - ANSWER gravitational
compression, impact heating, radioactive decay
process that produces a sedimentary rock - ANSWER uplift/erosion-transport-
deposition-compaction/lithification
Lahars (Volcanic Mudflows) - ANSWER are a definite threat to humans
, the Earth's oceans formed via - ANSWER volcanic outgassing and subsequent
condensation
fractional crystallization - ANSWER will make a crystallizing magma more silica-rich, will
change the density of a crystallizing magma, will change the composition of the liquid in
cooling magma
are halite and limestone chemical sedimentary rocks? - ANSWER yes
3 things that supported the Plate Tectonic Theory - ANSWER age of seafloor rocks,
seafloor topography, paleomagnetism of sea floor rocks
the Principle of Crosscutting Relations states that - ANSWER an igneous rock that
crosscuts some other rock is younger than that rock
what material from the Mt. Pinatubo eruption caused a lowering of global mean
temperatures in the months following the eruption? - ANSWER SO2 aerosols
a Felsic Extrusive Igneous rock is called a - ANSWER rhyolite
in order for significant erosion to occur and start the sedimentary rock cycle, - ANSWER
crustal uplift must occur
the boundary between the Archean and Proterozoic eras is approximately - ANSWER
2.5 billion years
there cannot be more protons than the atomic number - ANSWER true
plate boundary that has a lack of strong seismicity - ANSWER divergent MOR
the property whereby a mineral tends to break along pre-existing planes of weakness is
- ANSWER cleavage
absolute requirement of the Scientific Method - ANSWER formulating a testable,
falsifiable hypothesis
the greatest volcanic hazard to aircraft in the air is - ANSWER ash being sucked into the
planes' engines
the process whereby Fe and Mg are preferentially extracted from a crystallizing magma
is referred to as - ANSWER fractional crystallization
by what point in time did the earth become internally differentiated - ANSWER 4 billion
years ago
With Complete Solutions
what portion of the earth behave's elastically? - ANSWER lithosphere
what are the requirements for minerals? - ANSWER inorganic, naturally occuring, solid
subduction zones are characterized by - ANSWER lots of volcanism and seismicity
if three half lives of an unstable (radiogenic) isotope go by, what fraction of the original
parent isotope is left? - ANSWER 1/8
the driving force behind many/most of Earth's environmental problems are related to -
ANSWER our huge human population
the principle of superposition states that - ANSWER in an undisturbed sequence of
sedimentary rocks, the oldest rocks are on the bottom
cities endangered by being a volcanic hazard zone - ANSWER Hawaii, Seattle,
Anchorage
an intrusive igneous rock containing mostly olivine and Ca-plagioclase feldspar is -
ANSWER gabbro
identical fossils found in two outcrops a great distance from one another can be used to
establish the relative ages of the two crops by applying the - ANSWER Principle of
Faunal Succession
processes that contribute to the heating of the early earth - ANSWER gravitational
compression, impact heating, radioactive decay
process that produces a sedimentary rock - ANSWER uplift/erosion-transport-
deposition-compaction/lithification
Lahars (Volcanic Mudflows) - ANSWER are a definite threat to humans
, the Earth's oceans formed via - ANSWER volcanic outgassing and subsequent
condensation
fractional crystallization - ANSWER will make a crystallizing magma more silica-rich, will
change the density of a crystallizing magma, will change the composition of the liquid in
cooling magma
are halite and limestone chemical sedimentary rocks? - ANSWER yes
3 things that supported the Plate Tectonic Theory - ANSWER age of seafloor rocks,
seafloor topography, paleomagnetism of sea floor rocks
the Principle of Crosscutting Relations states that - ANSWER an igneous rock that
crosscuts some other rock is younger than that rock
what material from the Mt. Pinatubo eruption caused a lowering of global mean
temperatures in the months following the eruption? - ANSWER SO2 aerosols
a Felsic Extrusive Igneous rock is called a - ANSWER rhyolite
in order for significant erosion to occur and start the sedimentary rock cycle, - ANSWER
crustal uplift must occur
the boundary between the Archean and Proterozoic eras is approximately - ANSWER
2.5 billion years
there cannot be more protons than the atomic number - ANSWER true
plate boundary that has a lack of strong seismicity - ANSWER divergent MOR
the property whereby a mineral tends to break along pre-existing planes of weakness is
- ANSWER cleavage
absolute requirement of the Scientific Method - ANSWER formulating a testable,
falsifiable hypothesis
the greatest volcanic hazard to aircraft in the air is - ANSWER ash being sucked into the
planes' engines
the process whereby Fe and Mg are preferentially extracted from a crystallizing magma
is referred to as - ANSWER fractional crystallization
by what point in time did the earth become internally differentiated - ANSWER 4 billion
years ago
