ESS 101 B EXAM 2 (2025/2026)
UPDATE|EXAM QUESTIONS WITH
MULTIPLE CHOICES |VERIFIED &
REVISED ANSWERS (NEW)!!
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---ans-✔✔c.-is-proportional-to
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---ans-✔✔d.-all-of-the-above-are-correct
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---ans-✔✔e.-none-of-the-above-
recurrence-intervals-are-correct
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---ans-✔✔c.-they-had-accurate-tsunami-logs-from-
Japan-that-recorded-this-event
, 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---ans-✔✔a.-The-northern-Great-Lakes-area-is-still-isostatically-rising-and-
will-change-the-drainage-topography
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---ans-✔✔d.-erosion-of-plunging-anticline-and-
syncline
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---ans-✔✔d.-all-of-the-above-factors-influence-
earthquake-intensity
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-the-ocean-floor-
d.-submarine-landslides-due-to-seismic-events
e.-answers-b-and-d-are-both-correct---ans-✔✔e.-answers-b-and-d-are-both-correct
9.-A-minimum-of-_______-seismic-stations-is-necessary-to-determine-the-focus-of-an-
earthquake.-
a.-3
b.-10
c.-1
d.-300-e.-5---ans-✔✔a.-3
10.-If-an-earthquake-occurs,-the-_________-waves-are-the-first-to-arrive-at-a-seismic-
station.
UPDATE|EXAM QUESTIONS WITH
MULTIPLE CHOICES |VERIFIED &
REVISED ANSWERS (NEW)!!
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---ans-✔✔c.-is-proportional-to
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---ans-✔✔d.-all-of-the-above-are-correct
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---ans-✔✔e.-none-of-the-above-
recurrence-intervals-are-correct
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---ans-✔✔c.-they-had-accurate-tsunami-logs-from-
Japan-that-recorded-this-event
, 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---ans-✔✔a.-The-northern-Great-Lakes-area-is-still-isostatically-rising-and-
will-change-the-drainage-topography
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---ans-✔✔d.-erosion-of-plunging-anticline-and-
syncline
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---ans-✔✔d.-all-of-the-above-factors-influence-
earthquake-intensity
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-the-ocean-floor-
d.-submarine-landslides-due-to-seismic-events
e.-answers-b-and-d-are-both-correct---ans-✔✔e.-answers-b-and-d-are-both-correct
9.-A-minimum-of-_______-seismic-stations-is-necessary-to-determine-the-focus-of-an-
earthquake.-
a.-3
b.-10
c.-1
d.-300-e.-5---ans-✔✔a.-3
10.-If-an-earthquake-occurs,-the-_________-waves-are-the-first-to-arrive-at-a-seismic-
station.
