LATEST VERIFIED UPDATE: ESS 101 A+ QUESTIONS AND
ANSWERS.
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
c
What area(s) of North America are still isostatically rising today?
a. northern Great Lakes
b. southern Great Lakes
c. Hudson Bay, Canada
d. All of the above answers are correct
e. only answers a and c are correct
e
A tabular intrusive body that is oriented parallel to the existing sedimentary strata
______.
,a. is a stock
b. is a sill
c. is a dike
d. is a lopolith
e. is a batholith
b
The most recent eruption (1980) of Mt. St. Helens was _______ previous eruptions
during the Holocene (last 10,000 years).
a. the same magnitude as
b. less than
c. greater than
d. none of the above is correct, as there has only been one Mt. St. Helens
eruption during Holocene.
e. it is not possible to determine the magnitude of prior volcanic eruptions
b
Lahars generated from Mt. Rainier have ___________.
a. flowed to Seattle within the last 5000 years
b. never flowed beyond the flank of the volcano
c. flowed as far as Tacoma within the last 5000 years
,d. flowed to Seattle within the last 500 years
e. none of the above answers are correct
c
How do igneous plutons get exposed at the surface of the earth?
a. uplift
b. erosion
c. magma directly reaches the surface along radial dikes
d. all of above answers are correct
e. only answers a and b are correct
e
A shield volcano has a lower slope angle than a strato (composite) volcano
because ________.
a. its basaltic lava flows have higher viscosities than the andesitic flows of strato
volcanoes
b. its basaltic lava flows have lower viscosities than the andesitic flows of strato
volcanoes
c. the shield volcano is smaller than the strato volcano and cannot achieve the
same slope angle
d. it has more water content which lowers the melting temperature
, e. answers b and d are both correct
b
Domes are most similar to _________ and expose the ________ rocks in their
center.
a. synclines, youngest
b. synclines, oldest
c. anticlines, youngest
d. anticlines, oldest
e. none of the above answers are correct
d
The topographic expression and age of the Emperor Seamount chain to the
Hawaiian Islands becomes progressively __________ and _________ as one
travels from the northwest to the southeast?
a. higher, younger
b. lower, younger
c. higher, older
d. lower, older
e. none of the above are correct as there is no progressive change in topography
and age along the island chain
a
ANSWERS.
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
c
What area(s) of North America are still isostatically rising today?
a. northern Great Lakes
b. southern Great Lakes
c. Hudson Bay, Canada
d. All of the above answers are correct
e. only answers a and c are correct
e
A tabular intrusive body that is oriented parallel to the existing sedimentary strata
______.
,a. is a stock
b. is a sill
c. is a dike
d. is a lopolith
e. is a batholith
b
The most recent eruption (1980) of Mt. St. Helens was _______ previous eruptions
during the Holocene (last 10,000 years).
a. the same magnitude as
b. less than
c. greater than
d. none of the above is correct, as there has only been one Mt. St. Helens
eruption during Holocene.
e. it is not possible to determine the magnitude of prior volcanic eruptions
b
Lahars generated from Mt. Rainier have ___________.
a. flowed to Seattle within the last 5000 years
b. never flowed beyond the flank of the volcano
c. flowed as far as Tacoma within the last 5000 years
,d. flowed to Seattle within the last 500 years
e. none of the above answers are correct
c
How do igneous plutons get exposed at the surface of the earth?
a. uplift
b. erosion
c. magma directly reaches the surface along radial dikes
d. all of above answers are correct
e. only answers a and b are correct
e
A shield volcano has a lower slope angle than a strato (composite) volcano
because ________.
a. its basaltic lava flows have higher viscosities than the andesitic flows of strato
volcanoes
b. its basaltic lava flows have lower viscosities than the andesitic flows of strato
volcanoes
c. the shield volcano is smaller than the strato volcano and cannot achieve the
same slope angle
d. it has more water content which lowers the melting temperature
, e. answers b and d are both correct
b
Domes are most similar to _________ and expose the ________ rocks in their
center.
a. synclines, youngest
b. synclines, oldest
c. anticlines, youngest
d. anticlines, oldest
e. none of the above answers are correct
d
The topographic expression and age of the Emperor Seamount chain to the
Hawaiian Islands becomes progressively __________ and _________ as one
travels from the northwest to the southeast?
a. higher, younger
b. lower, younger
c. higher, older
d. lower, older
e. none of the above are correct as there is no progressive change in topography
and age along the island chain
a
