LSU Geology 1001 – Flashcards
Unlock all answers in this set
Unlock answersquestion
            Which of the following cannot be caused by overpumping of ground water?
answer
        all of these are possible consequences of overpumping
question
            What ideas brought a renewed interest to the idea of continental drift?
answer
        data that a submarine mountain occurred beneath the middle of the Atlantic Ocean
question
            As two oceanic plates diverge at mid-ocean ridges, melting of the rising mantle occurs due to:
answer
        decompression
question
            What type of plate boundary is depicted by the smaller arrows in the center of this figure?
answer
        transform boundary
question
            Use your knowledge of plate boundaries to answer whether a volcano is likely or unlikely to form at the location of the red triangle.
answer
        Unlikely
question
            Counter currents near the equator flow mostly:
answer
        east-west, parallel to the equator
question
            Sediments in and below a dewatered area of an aquifer become compacted because:
answer
        water pressure drops and the pore spaces are closed
question
            Pushing down on the sealed glass container causes
answer
        decreased volume, pressure increases.
question
            Which of the following is NOT a way that plate motions can cause changes in climate?
answer
        rapid seafloor spreading lowers sea level, exposing the continental shelves
question
            Use your knowledge of plate boundaries to answer whether an earthquake is likely or unlikely to occur at the location of the red circle.
answer
        Unlikely
question
            Which of these four lakes could only exist if they if they received water from precipitation or runoff from the land?
answer
        1 and 4
question
            Which of the following is a common setting for a spring?
answer
        all of these
question
            Which area(s) on this world map is likely to have earthquakes?
answer
        A, B, and C only
question
            The area marked by number 2 on this figure is a desert primarily because:
answer
        it experiences dry, descending air in the subtropics
question
            For the sand dunes shown here, which was does the prevailing wind blow?
answer
        from left to right.
question
            How does this desert feature form?
answer
        wind coats the surface with material that becomes iron and manganese oxides
question
            When melting forms magma:
answer
        partial melting produces a magma that is more felsic than the source
question
            This figure shows how sunlight strikes the earth during certain times of the year. It is summer:
answer
        in the Northern Hemisphere
question
            The east Australian current is shown by the sweeping arrow flowing south along the continents eastern shoreline. Winds blowing across this current onto land are shown as a series of westward arrows. These winds:
answer
        pick up moisture and then cause precipitation, allowing rain forests along the coast
question
            Which of the following statements correctly states how early crystallization affects the composition of a magma? Use the graph.
answer
        Early crystallization causes the MgO (mafic) content to decline in the magma.
question
            What does the texture of this rock indicate about its cooling history? The magma cooled:
answer
        slowly under relatively deep conditions
question
            The site on the accompanying figure that would most likely form a rock with large crystals is:
answer
        A
question
            Which of the following sites will be most susceptible to damage from hurricanes?
answer
        E, F, and H
question
            What types of plate boundaries are shown in this figure?
answer
        divergent and transform
question
            Tropical rain forests are clustered near the Intertropical Convergence Zone, which is:
answer
        a curved boundary where winds converge near the equator
question
            What does this texture indicate about the formation of this rock?
answer
        The magma had abundant dissolved gas.
question
            On this map, a cold front is located between letters:
answer
        B and C
question
            What would fossil ages from the geologic timescale and an isotopic age on the granite tell us about the age of the unconformity?
answer
        The unconformity is older than the age assigned to the fossils.
question
            To create a sea breeze
answer
        the warm air over the land rises, creating low pressure. Cool air over water sinks, creating high pressure. This creates an onshore breeze.
question
            Sea Surface Temperatures (SSTs) are typically warmest:
answer
        on the western sides of oceans.
question
            The vertical igneous feature shown in this photograph is a:
answer
        dike
question
            Pictured here is a model of how the atmosphere is heated. Which arrow represents heating of the earth's atmosphere by long wave radiation?
answer
        infrared energy emitted by land
question
            Which principle of relative dating can be used at Siccar Point in Scotland to determine that the rocks below the unconformity were tilted to vertical before erosion occurred?
answer
        Original horizontality
question
            Which of the following settings is most likely to have high precipitation?
answer
        a site where two large-scale circulation patterns converge, causing air to rise and cool
question
            Atmospheric pressure decreases with increasing altitude due to:
answer
        a decrease in the thickness and density of air on top
question
            Use this graph that relates temperature and pressure to answer this question. What is required if a rock in position B moves to position A on the graph?
answer
        Temperature would have to decrease.
question
            The stages associated with continental rifting are, in order from earliest to latest:
answer
        uplift, continental rift, narrow ocean basin, wide ocean basin