Geol 102 - Environmental Geology » Spring 2020 » Exam 1
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Question #1
Magma typically rises to the surface at divergent plate boundaries.
A.
FALSE
B.
TRUE
Question #2
Once the Earth's carrying capacity is exceeded, population reduction will occur whether we want it to or not.
A.
TRUE
B.
FALSE
Question #3
With a population growth rate of 0.7%, it would take 100 years for the population to double.
A.
FALSE
B.
TRUE
Question #4
Rapid cooling of molten rock produces large crystals.
A.
FALSE
B.
TRUE
Question #5
A single seismograph can determine the location of an earthquake.
A.
TRUE
B.
FALSE
Question #6
We can credit volcanoes for our oceans and atmosphere.
A.
TRUE
B.
FALSE
Question #7
Relative age dating enables scientists to determine the age in years of a rock mass, whereas absolute age dating can only determine the sequence of events.
A.
FALSE
B.
TRUE
Question #8
People living along a passive margin have a low probability of experiencing volcanoes and earthquakes.
A.
TRUE
B.
FALSE
Question #9
An environmental geologist could be expected to apply the scientific method to all of the following questions EXCEPT:
A.
Which public policy can best lower population growth rate?
B.
Are the soils in a sub-development safe to build on?
C.
Which regions in the United States have the lowest seismic risk?
D.
How did the water supply to a community get contaminated?
E.
What is the landslide potential of building a shopping mall outside a city?
Question #10
The number of people or animals that can be supported indefinitely by a given area of land is called ____.
A.
population dynamics
B.
carrying capacity
C.
critical mass
D.
growth rate
Question #11
Which item listed below has NOT helped to increase the carrying capacity of the Earth?
A.
the development of nitrogen-based fertilizers
B.
genetic modification of grains and other crops
C.
the development and application of chemical pesticides
D.
the development and application of chemical herbicides
E.
the development of a vaccine for polio
Question #12
Which of the following is not true of environmental geology?
A.
It is concerned with developing methods to prevent natural disasters from occurring.
B.
It seeks ways for the Earth's inhabitants to interact safely with their geological surroundings.
C.
It applies the science of geology to problems arising from the complex interactions of water, soil, air, solid earth, and life.
D.
It is concerned largely with surface geologic processes.
E.
It is concerned with how natural geological processes affect man.
Question #13
Secondary waves (S-waves) are able to pass through which layer of Earth?
A.
Crust and mantle
B.
Liquid outer core and solid inner core
C.
Mantle, liquid outer core, and solid inner core
D.
Mantle and liquid outer core
E.
Crust only
Question #14
The compressional movement of plate boundaries, such as observed at the Juan De Fuca plate, is representative of which type of boundary?
A.
Subduction
B.
Spreading center
C.
Convergent
D.
Transform
E.
Divergent
Question #15
Which geological processes explains why the ocean floors are so young?
A.
transform faulting
B.
subduction
C.
rift formation
D.
erosion
E.
mountain formation
Question #16
What type of plate boundary is the San Andreas Fault?
A.
transform
B.
divergent
C.
convergent
D.
passive
Question #17
What force is thought to be an important cause of plate tectonic motion?
A.
volcanic eruptions
B.
shear strain
C.
Earth tides
D.
thermal convection currents
E.
earthquakes
Question #18
What is a common distinguishing characteristic of sedimentary rock masses?
A.
They are formed by solidification from a melt.
B.
They are always very colorful.
C.
They tend to be extremely hard.
D.
They tend to be layered.
Question #19
Granite is a type of:
A.
extrusive igneous rock.
B.
volcanic rock.
C.
intrusive igneous rock.
D.
metamorphic rock.
E.
sedimentary rock.
Question #20
Which property of minerals is variable and therefore the least reliable as a clue in identifying a mineral type?
A.
crystal form
B.
hardness
C.
cleavage
D.
luster
E.
color
Question #21
An atom having either a positive or negative electrical charge is called a(n):
A.
plasma.
B.
electron.
C.
ion.
D.
isotope.
E.
molecule.
Question #22
How much more energy does a magnitude 8 earthquake release than a magnitude 6 earthquake?
A.
900 times more
B.
30 times more
C.
10 times more
D.
2 times more
E.
27,000 times more
Question #23
What is the point of subsurface origin of an earthquake called?
A.
epicenter
B.
nexus
C.
scarp
D.
ground zero
E.
focus
Question #24
Which type of fault would you expect if the rocks are subjected to extensional stress?
A.
Stress Fault
B.
Reverse Fault
C.
Thrust Fault
D.
Strike-slip Fault
E.
Normal Fault
Question #25
Which type of earthquake wave moves the fastest?
A.
Love waves
B.
permanent waves
C.
S-waves
D.
P-waves
E.
Rayleigh waves
Question #26
Which type of seismic wave is most responsible for damage?
A.
S-waves
B.
P-waves
C.
sonar
D.
surface waves
E.
body waves
Question #27
Which of the following methods is NOT useful in forecasting the probability of a volcanic eruption?
A.
earthquakes measured by seismometers
B.
reversals in the local magnetic field measure by magnetometers
C.
changes in Earth's gravity field measured by gravimeters
D.
swelling measured by tilt-meters or satellite interferometry
E.
changes in the composition of fumarole gas measured by a gas chromatograph
Question #28
What is a volcano called that has not erupted in living memory but shows evidence of having erupted within the past few thousand years?
A.
active
B.
extinct
C.
inactive
D.
a high risk volcano
E.
dormant
Question #29
The majestic snow-covered peaks on the landward side of a subduction zone are usually what type of volcano?
A.
cinder cones
B.
basaltic plateaus
C.
domes
D.
shield volcanoes
E.
composite volcanoes
Question #30
What does viscosity mean?
A.
It is a measure of flexibility of a solid.
B.
It has to do with the resistance of a fluid to flow.
C.
It refers to how brittle a solid substance is.
D.
It refers to a temperature gradient in a liquid.
E.
It is a measure of the volume of pore space in a volcanic rock
Question #31
What is a large circular or elliptical depression at the summit of a volcano resulting from collapse called?
A.
a blow hole
B.
a rift valley
C.
a volcanic vent
D.
a crater
E.
a caldera
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