# EOSC 114 Module 2 - Earthquakes Quiz-1.docx

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Published on 12 Dec 2012
School
Course
Professor
Quiz: Earthquakes
1.
When a fault ruptures DEEP in the lithosphere, the energy is
released mainly by ____________.
Student Response
Value
Correct
A.
P-waves that dissipate
perpendicularly (at a 90° angle) from
the fault plane
B.
S-waves that dissipate
perpendicularly (at a 90° angle) from
the fault plane
C.
Raleigh waves that dissipate away
from the fault plane
0%
D.
both P-waves and S-waves that
dissipate in all directions away from
the fault plane
E.
P-waves, S-waves and Raleigh waves
that dissipate in all directions away
from the fault plane
Score:
0/1
2.
Of the four types of seismic waves, which will propagate
only along a surface?
Student Response
Value
Correct
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A.
only P and S waves
B.
only Rayleigh and S waves
C.
only Rayleigh and Love waves
100%
D.
only P, S, and Rayleigh waves
E.
All four wave types.
1/1
3.
What does the Mercalli scale measure?
Student Response
Value
Correct
A.
seismic energy release per square
meter
B.
moment magnitude
C.
maximum ground acceleration
D.
felt intensity of shaking, and damage
100%
E.
seismic moment rate
Score:
1/1
4.
Based on the map of SW British Columbia below, we can
conclude that earthquake intensity in Richmond is likely
higher than that in Vancouver because_______.
Student Response
Value
Correct
A.
the majority of buildings in
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Vancouver are concrete
B.
the majority of buildings in
Richmond have not been retrofitted to
withstand earthquakes
C.
Richmond is underlain by less
consolidated rock
100%
D.
Richmond is closer to the main
subduction thrust
E.
the majority of buildings in
Richmond are wood frame
Score:
1/1
5.
Which form of earthquake magnitude is based upon the
actual energy released at the hypocentre?
Student Response
Value
Correct
A.
Richter magnitude
B.
Surface-wave magnitude
C.
P-wave magnitude
D.
S-wave magnitude
E.
Moment magnitude
100%
Score:
1/1
6.
The process of establishing a model of the Earth by
"inverting" seismic data involves _______________.
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## Document Summary

When a fault ruptures deep in the lithosphere, the energy is released mainly by ____________. Answer: p-waves that dissipate perpendicularly (at a 90 angle) from the fault plane, s-waves that dissipate perpendicularly (at a 90 angle) from the fault plane, raleigh waves that dissipate away. 0% from the fault plane: both p-waves and s-waves that dissipate in all directions away from the fault plane, p-waves, s-waves and raleigh waves that dissipate in all directions away from the fault plane. Answer: only p and s waves, only rayleigh and s waves, only rayleigh and love waves, only p, s, and rayleigh waves, all four wave types. Value: seismic energy release per square meter, moment magnitude, maximum ground acceleration, felt intensity of shaking, and damage 100, seismic moment rate. Based on the map of sw british columbia below, we can conclude that earthquake intensity in richmond is likely higher than that in vancouver because_______. Student response: the majority of buildings in.