ESS 101 B Exam 2 WITH
CORRECT QUESTIONS AND
ANSWERS
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[COMPANY NAME] [Company address]
,1. 1. The stress rate the strain rate for
elastic deformation.
a. is greater than
b. is less than
c. is proportional to
d. is variable compared to e. never changes relative to Answer: c. is
proportional to
2. 2. Where do earthquakes occur in the Pacific Northwest?
a. near the surface within the North American plate
b. deep within the Juna de Fuca plate
c. along the Cascadia subduction zone
d. all of the above are correct
e. only answers a and c are correct Answer: d. all of the above are correct
3. 3. According to Brian Atwater's research along the Washington
coastline, the recurrence interval of large Cascadia subduction
zone earthquakes is
.
a. ~3500 years
b. ~5000 years
c. ~10,000 years
d. ~1,000,000 years
e. none of the above recurrence intervals are correct Answer: e. none of the
above recurrence intervals are correct
4. 4. How did geologists determine the exact day of offset on the
Cascadia subduction zone in 1700 AD?
a. they counted tree rings of dead cedar trees
b. they used radiocarbon dating of buried peat
c. they had accurate tsunami logs from Japan that recorded this event
d. they had accurate tsunami logs from native Americans that
recorded this event
e. there were no records of this event Answer: c. they had accurate tsunami logs from
Japan that recorded this event
,5. 5. The Great Lakes basin presently drains through the St.
Lawrence River drainage. Why will the Great Lakes basin
eventually drain south through the Mississippi River drainage?
, a. The northern Great Lakes area is still isostatically rising and will
change the drainage topography
b. The southern Great Lakes area is still isostatically rising and will
change the drainage topography
c. The northern Great Lakes area is still isostatically subsiding and
will change the drainage topography
d. The southern Great Lakes area is still isostatically subsiding and
will change the drainage topography
e. The Niagra escarpment is still tectonically active and is causing the
northern Great Lakes to uplift Answer: a. The northern Great Lakes area is still isostatically
rising and will change the drainage topography
6. 6. Zigzag outcrop
patterns are the result of .
a. erosion of normal faults
b. erosion of monocline folds
c. erosion of symmetric anticline and syncline folds
d. erosion of plunging anticline and syncline
e. erosion of zigzag deposition features Answer: d. erosion of plunging anticline
and syncline
7. 7. What factors influence earthquake intensity?
a. magnitude of the earthquake
b. proximity to the earthquake's epicenter
c. substrate that underlies the surface
d. all of the above factors influence earthquake intensity
e. only answers a and b are correct Answer: d. all of the above factors influence
earthquake intensity
8. 8. Tsunamis may be generated
.
a. along vertical offset normal faults at divergent margins
b. along subduction zones where vertical offset has occurred on
the ocean floor
c. along transform margins where horizontal offset has occurred on
CORRECT QUESTIONS AND
ANSWERS
usr
[COMPANY NAME] [Company address]
,1. 1. The stress rate the strain rate for
elastic deformation.
a. is greater than
b. is less than
c. is proportional to
d. is variable compared to e. never changes relative to Answer: c. is
proportional to
2. 2. Where do earthquakes occur in the Pacific Northwest?
a. near the surface within the North American plate
b. deep within the Juna de Fuca plate
c. along the Cascadia subduction zone
d. all of the above are correct
e. only answers a and c are correct Answer: d. all of the above are correct
3. 3. According to Brian Atwater's research along the Washington
coastline, the recurrence interval of large Cascadia subduction
zone earthquakes is
.
a. ~3500 years
b. ~5000 years
c. ~10,000 years
d. ~1,000,000 years
e. none of the above recurrence intervals are correct Answer: e. none of the
above recurrence intervals are correct
4. 4. How did geologists determine the exact day of offset on the
Cascadia subduction zone in 1700 AD?
a. they counted tree rings of dead cedar trees
b. they used radiocarbon dating of buried peat
c. they had accurate tsunami logs from Japan that recorded this event
d. they had accurate tsunami logs from native Americans that
recorded this event
e. there were no records of this event Answer: c. they had accurate tsunami logs from
Japan that recorded this event
,5. 5. The Great Lakes basin presently drains through the St.
Lawrence River drainage. Why will the Great Lakes basin
eventually drain south through the Mississippi River drainage?
, a. The northern Great Lakes area is still isostatically rising and will
change the drainage topography
b. The southern Great Lakes area is still isostatically rising and will
change the drainage topography
c. The northern Great Lakes area is still isostatically subsiding and
will change the drainage topography
d. The southern Great Lakes area is still isostatically subsiding and
will change the drainage topography
e. The Niagra escarpment is still tectonically active and is causing the
northern Great Lakes to uplift Answer: a. The northern Great Lakes area is still isostatically
rising and will change the drainage topography
6. 6. Zigzag outcrop
patterns are the result of .
a. erosion of normal faults
b. erosion of monocline folds
c. erosion of symmetric anticline and syncline folds
d. erosion of plunging anticline and syncline
e. erosion of zigzag deposition features Answer: d. erosion of plunging anticline
and syncline
7. 7. What factors influence earthquake intensity?
a. magnitude of the earthquake
b. proximity to the earthquake's epicenter
c. substrate that underlies the surface
d. all of the above factors influence earthquake intensity
e. only answers a and b are correct Answer: d. all of the above factors influence
earthquake intensity
8. 8. Tsunamis may be generated
.
a. along vertical offset normal faults at divergent margins
b. along subduction zones where vertical offset has occurred on
the ocean floor
c. along transform margins where horizontal offset has occurred on
