1 Exampromax - Stuvia US 2025/2026
APSC 151 2025 MIDTERM Questions and
Answers (100% Correct Answers) Already
Graded A+
Question: The process of unloading can produce:
(a) joints
(b) mud cracks
(c) pillows
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(d) cross-bedding
Exampromax - Stuvia US
(e) leaching
⼀Answer: a
Question: An unconformity, like the one in the Kingston area, is best
defined as:
(a) a layer of rocks with very unusual fossils
(b) a basal conglomerate
(c) a layer of sedimentary rocks
(d) a thin, tabular or sheet-like, igneous intrusion
(e) a time gap in the rock record
⼀Answer: e
Question: Weathering produces minerals that are more stable at the
Earth's surface. Of the five minerals listed below,
which one is the most abundant product of the weathering process:
(a) clay
(b) hematite
, 2 Exampromax - Stuvia US 2025/2026
(c) limonite
(d) quartz
(e) feldspar
⼀Answer: a
Question: For which group do both minerals have a sheet structure?
(a) muscovite, clay
(b) feldspar, quartz
(c) hornblende, pyroxene
(d) plagioclase, pyroxene
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(e) olivine, hornblende
Exampromax - Stuvia US
⼀Answer: a
Question: Which of the following rock types is most likely to be well-
sorted?
(a) greywacke
(b) limestone
(c) quartz sandstone
(d) glacial till
(e) arkose
⼀Answer: c
Question: Which of the following lists is in correct order going from
lower to higher grade of regional metamorphism?
(a) slate, gneiss, mica schist (b) mica schist, slate, gneiss
(c) mica schist, gneiss, slate (d) gneiss, slate, mica schist
(e) slate, mica schist, gneiss
⼀Answer: e
, 3 Exampromax - Stuvia US 2025/2026
Question: What is the main factor that controls the rate of weathering of
rocks?
(a) grain size of the rock
(b) degree of unloading
(c) topography
(d) rock type
(e) climate
⼀Answer: e
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Question: Which of the following rock pairs would both be most likely to
Exampromax - Stuvia US
contain feldspar grains?
(a) mudstone, shale
(b) banded iron formation, phyllite
(c) quartz sandstone, chalk
(d) limestone, marble
(e) arkose, granite
⼀Answer: a
Question: Abundant evidence of fossils of life-forms that made hard
protective shells did not appear in the geologic record
until how long ago?
(a) 3.5 billion years
(b) 5 billion years
(c) 65 million years
(d) 600 million years
(e) 300 million years
⼀Answer: d
APSC 151 2025 MIDTERM Questions and
Answers (100% Correct Answers) Already
Graded A+
Question: The process of unloading can produce:
(a) joints
(b) mud cracks
(c) pillows
© 2025 Assignment Expert
(d) cross-bedding
Exampromax - Stuvia US
(e) leaching
⼀Answer: a
Question: An unconformity, like the one in the Kingston area, is best
defined as:
(a) a layer of rocks with very unusual fossils
(b) a basal conglomerate
(c) a layer of sedimentary rocks
(d) a thin, tabular or sheet-like, igneous intrusion
(e) a time gap in the rock record
⼀Answer: e
Question: Weathering produces minerals that are more stable at the
Earth's surface. Of the five minerals listed below,
which one is the most abundant product of the weathering process:
(a) clay
(b) hematite
, 2 Exampromax - Stuvia US 2025/2026
(c) limonite
(d) quartz
(e) feldspar
⼀Answer: a
Question: For which group do both minerals have a sheet structure?
(a) muscovite, clay
(b) feldspar, quartz
(c) hornblende, pyroxene
(d) plagioclase, pyroxene
© 2025 Assignment Expert
(e) olivine, hornblende
Exampromax - Stuvia US
⼀Answer: a
Question: Which of the following rock types is most likely to be well-
sorted?
(a) greywacke
(b) limestone
(c) quartz sandstone
(d) glacial till
(e) arkose
⼀Answer: c
Question: Which of the following lists is in correct order going from
lower to higher grade of regional metamorphism?
(a) slate, gneiss, mica schist (b) mica schist, slate, gneiss
(c) mica schist, gneiss, slate (d) gneiss, slate, mica schist
(e) slate, mica schist, gneiss
⼀Answer: e
, 3 Exampromax - Stuvia US 2025/2026
Question: What is the main factor that controls the rate of weathering of
rocks?
(a) grain size of the rock
(b) degree of unloading
(c) topography
(d) rock type
(e) climate
⼀Answer: e
© 2025 Assignment Expert
Question: Which of the following rock pairs would both be most likely to
Exampromax - Stuvia US
contain feldspar grains?
(a) mudstone, shale
(b) banded iron formation, phyllite
(c) quartz sandstone, chalk
(d) limestone, marble
(e) arkose, granite
⼀Answer: a
Question: Abundant evidence of fossils of life-forms that made hard
protective shells did not appear in the geologic record
until how long ago?
(a) 3.5 billion years
(b) 5 billion years
(c) 65 million years
(d) 600 million years
(e) 300 million years
⼀Answer: d
