Page 1 of 70
GL101 Exam ALL 250 QUESTIONS AND
CORRECT ANSWERS LATEST UPDATE THIS
YEAR
QUESTION: The oceanic crust is made of mafic rock called ________ and is about ________
thick on average.
A) basalt, 7 km
B) marine sedimentary rocks, 25 km
C) basalt, 70 km
D) granite, 35-40 km - ANSWER-A
QUESTION: The mantle is made of dense rock ________ called ________.
A) <3.0 g/cm3, basalt
B) <2.9 g/cm3, granite
C) ~3.3 g/cm3, peridotite
D) >3.4 g/cm3, shergottite - ANSWER-C
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QUESTION: In correct order from the centre outward, Earth includes which units?
A) core, inner mantle, outer mantle, crust
B) inner core, outer core, mantle, crust
C) inner core, crust, mantle, hydrosphere
D) core, crust, mantle, hydrosphere - ANSWER-B
QUESTION: The asthenosphere is actually a part of the ________ of the Earth.
A) outer core
B) crust
C) inner core
D) mantle - ANSWER-D
QUESTION: The continental crust extends ________.
A) only to where their shorelines occur; beyond that is oceanic crust
B) beneath the continental shelf through to the toe of the continental slope
C) beneath about half of the ocean basins wherever it is shallow
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D) deep into the mantle wherever there are subduction zones - ANSWER-B
QUESTION: ________ are the three, basic categories of rocks in the rock cycle.
A) Crustal, lithospheric, and transform
B) Sedimentary, igneous, and metamorphic
C) Sedimentary, igneous, and volcanic
D) Weathered, sedimentary, and volcanic - ANSWER-B
QUESTION: ________ is the process by which rocks breakdown in place to produce soils and
sediments.
A) Weathering
B) Lithification
C) Subduction
D) Metamorphism - ANSWER-A
QUESTION: Which of the following best defines a mineral and a rock?
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A) A rock has an orderly, repetitive, geometric, internal arrangement of minerals; a mineral is a
lithified or consolidated aggregate of rocks.
B) A mineral consists of its constituent atoms arranged in a geometrically repetitive structure;
in a rock, the atoms are randomly bonded without any geometric pattern.
C) In a mineral the constituent atoms are bonded in a regular, repetitive, internal structure; a
rock is a lithified or consolidated aggregate of minerals.
D) A rock consists of atoms bonded in a regular, geometrically predictable arrangement; a
mineral is a consolidated aggregate of different rock particles. - ANSWER-C
QUESTION: Which is not a requirement? To be a mineral it must be or have ________.
A) naturally occurring
B) well formed external crystal shapes
C) orderly regular atomic or ionic structure
D) definite chemical composition - ANSWER-B
QUESTION: Minerals consist of an ordered array of atoms or ions that are ________.
A) all the same size and charge
4
GL101 Exam ALL 250 QUESTIONS AND
CORRECT ANSWERS LATEST UPDATE THIS
YEAR
QUESTION: The oceanic crust is made of mafic rock called ________ and is about ________
thick on average.
A) basalt, 7 km
B) marine sedimentary rocks, 25 km
C) basalt, 70 km
D) granite, 35-40 km - ANSWER-A
QUESTION: The mantle is made of dense rock ________ called ________.
A) <3.0 g/cm3, basalt
B) <2.9 g/cm3, granite
C) ~3.3 g/cm3, peridotite
D) >3.4 g/cm3, shergottite - ANSWER-C
1
, Page 2 of 70
QUESTION: In correct order from the centre outward, Earth includes which units?
A) core, inner mantle, outer mantle, crust
B) inner core, outer core, mantle, crust
C) inner core, crust, mantle, hydrosphere
D) core, crust, mantle, hydrosphere - ANSWER-B
QUESTION: The asthenosphere is actually a part of the ________ of the Earth.
A) outer core
B) crust
C) inner core
D) mantle - ANSWER-D
QUESTION: The continental crust extends ________.
A) only to where their shorelines occur; beyond that is oceanic crust
B) beneath the continental shelf through to the toe of the continental slope
C) beneath about half of the ocean basins wherever it is shallow
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D) deep into the mantle wherever there are subduction zones - ANSWER-B
QUESTION: ________ are the three, basic categories of rocks in the rock cycle.
A) Crustal, lithospheric, and transform
B) Sedimentary, igneous, and metamorphic
C) Sedimentary, igneous, and volcanic
D) Weathered, sedimentary, and volcanic - ANSWER-B
QUESTION: ________ is the process by which rocks breakdown in place to produce soils and
sediments.
A) Weathering
B) Lithification
C) Subduction
D) Metamorphism - ANSWER-A
QUESTION: Which of the following best defines a mineral and a rock?
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A) A rock has an orderly, repetitive, geometric, internal arrangement of minerals; a mineral is a
lithified or consolidated aggregate of rocks.
B) A mineral consists of its constituent atoms arranged in a geometrically repetitive structure;
in a rock, the atoms are randomly bonded without any geometric pattern.
C) In a mineral the constituent atoms are bonded in a regular, repetitive, internal structure; a
rock is a lithified or consolidated aggregate of minerals.
D) A rock consists of atoms bonded in a regular, geometrically predictable arrangement; a
mineral is a consolidated aggregate of different rock particles. - ANSWER-C
QUESTION: Which is not a requirement? To be a mineral it must be or have ________.
A) naturally occurring
B) well formed external crystal shapes
C) orderly regular atomic or ionic structure
D) definite chemical composition - ANSWER-B
QUESTION: Minerals consist of an ordered array of atoms or ions that are ________.
A) all the same size and charge
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