1|Page
Texas (TX) ASBOG Fundamentals of Geology (FG)
Licensure Exam | Latest Verified Questions and
Detailed Answers
OVERVIEW DESCRIPTION:
This Comprehensive set of multiple choice questions is designed for the Texas ASBOG
Fundamentals of Geology (FG) Exam, a licensure examination that assesses foundational
knowledge across the geosciences. The exam covers eight content domains: General and
Field Geology, Mineralogy/Petrology/Geochemistry,
Sedimentology/Stratigraphy/Paleontology, Geomorphology/Surficial
Processes/Quaternary Geology, Structure/Tectonics/Seismology, Hydrogeology,
Engineering Geology, and Economic Geology/Energy Resources. It evaluates a candidate’s
ability to apply geologic principles, interpret field and laboratory data, and understand
earth processes relevant to professional geologic practice. The FG exam is developed by
ASBOG and administered in Texas by the Texas Board of Professional Geoscientists (TBPG).
General and Field Geology (~20%)
QUESTION 1
A topographic map has a scale of 1:24,000. Two points are 2.5 inches apart on the map.
What is the ground distance?
A) 2,500 ft
B) 5,000 ft
C) 10,000 ft
D) 24,000 ft
CORRECT ANSWER: B
EXPERT RATIONALE: At 1:24,000, one inch equals 2,000 feet. Multiplying 2.5 inches by
2,000 ft/in gives 5,000 feet.
,2|Page
QUESTION 2
A bed has strike N30°E and dip 45°SE. What is the dip direction?
A) N30°E
B) S30°W
C) S60°E
D) N60°W
CORRECT ANSWER: C
EXPERT RATIONALE: Dip direction is perpendicular to strike. Adding 90° to N30°E
toward the southeast gives S60°E.
QUESTION 3
When measuring strike with a Brunton compass, strike is defined as:
A) The direction of maximum slope
B) The intersection of a horizontal plane with the bedding plane
C) Always north-south
D) The dip direction plus 90°
CORRECT ANSWER: B
EXPERT RATIONALE: Strike is the bearing of a horizontal line on an inclined surface. Dip
is perpendicular to strike and represents maximum slope.
QUESTION 4
Closely spaced contour lines on a topographic map indicate:
A) Gentle slope
B) Steep slope
C) Flat terrain
D) Depression
CORRECT ANSWER: B
,3|Page
EXPERT RATIONALE: Contour lines connect points of equal elevation. When they are
close together, elevation changes rapidly over short horizontal distance, indicating steep
slopes.
QUESTION 5
A horizontal bed exposed on a hillside will produce an outcrop pattern that:
A) Parallels topographic contours
B) Crosses contours at 90°
C) Forms straight lines
D) Always points downstream
CORRECT ANSWER: A
EXPERT RATIONALE: Horizontal beds intersect topography at constant elevation. Their
contacts therefore follow topographic contour lines.
QUESTION 6
The three-point problem is used to determine:
A) The attitude of a planar surface from three known elevations
B) Ore grade
C) Earthquake epicenters
D) Groundwater flow velocity
CORRECT ANSWER: A
EXPERT RATIONALE: Three points of known elevation on a plane can be used to
construct strike and dip. This is a standard field and map technique.
QUESTION 7
Apparent dip is:
A) Always greater than true dip
, 4|Page
B) Equal to true dip only in the dip direction
C) Less than or equal to true dip
D) Independent of strike
CORRECT ANSWER: C
EXPERT RATIONALE: Apparent dip is measured in any direction other than true dip. It is
always less than true dip except when measured exactly in the true dip direction.
QUESTION 8
What is the apparent dip of a bed along its strike direction?
A) 30°
B) 0°
C) 15°
D) 90°
CORRECT ANSWER: B
EXPERT RATIONALE: Along strike there is no vertical change in the bed. Apparent dip is
therefore zero.
QUESTION 9
Vertical exaggeration on a topographic profile equals:
A) Horizontal scale divided by vertical scale
B) Vertical scale divided by horizontal scale
C) Horizontal scale multiplied by vertical scale
D) Contour interval divided by map scale
CORRECT ANSWER: B
EXPERT RATIONALE: Vertical exaggeration is the ratio of the vertical scale to the
horizontal scale. A larger vertical scale produces higher vertical exaggeration.
Texas (TX) ASBOG Fundamentals of Geology (FG)
Licensure Exam | Latest Verified Questions and
Detailed Answers
OVERVIEW DESCRIPTION:
This Comprehensive set of multiple choice questions is designed for the Texas ASBOG
Fundamentals of Geology (FG) Exam, a licensure examination that assesses foundational
knowledge across the geosciences. The exam covers eight content domains: General and
Field Geology, Mineralogy/Petrology/Geochemistry,
Sedimentology/Stratigraphy/Paleontology, Geomorphology/Surficial
Processes/Quaternary Geology, Structure/Tectonics/Seismology, Hydrogeology,
Engineering Geology, and Economic Geology/Energy Resources. It evaluates a candidate’s
ability to apply geologic principles, interpret field and laboratory data, and understand
earth processes relevant to professional geologic practice. The FG exam is developed by
ASBOG and administered in Texas by the Texas Board of Professional Geoscientists (TBPG).
General and Field Geology (~20%)
QUESTION 1
A topographic map has a scale of 1:24,000. Two points are 2.5 inches apart on the map.
What is the ground distance?
A) 2,500 ft
B) 5,000 ft
C) 10,000 ft
D) 24,000 ft
CORRECT ANSWER: B
EXPERT RATIONALE: At 1:24,000, one inch equals 2,000 feet. Multiplying 2.5 inches by
2,000 ft/in gives 5,000 feet.
,2|Page
QUESTION 2
A bed has strike N30°E and dip 45°SE. What is the dip direction?
A) N30°E
B) S30°W
C) S60°E
D) N60°W
CORRECT ANSWER: C
EXPERT RATIONALE: Dip direction is perpendicular to strike. Adding 90° to N30°E
toward the southeast gives S60°E.
QUESTION 3
When measuring strike with a Brunton compass, strike is defined as:
A) The direction of maximum slope
B) The intersection of a horizontal plane with the bedding plane
C) Always north-south
D) The dip direction plus 90°
CORRECT ANSWER: B
EXPERT RATIONALE: Strike is the bearing of a horizontal line on an inclined surface. Dip
is perpendicular to strike and represents maximum slope.
QUESTION 4
Closely spaced contour lines on a topographic map indicate:
A) Gentle slope
B) Steep slope
C) Flat terrain
D) Depression
CORRECT ANSWER: B
,3|Page
EXPERT RATIONALE: Contour lines connect points of equal elevation. When they are
close together, elevation changes rapidly over short horizontal distance, indicating steep
slopes.
QUESTION 5
A horizontal bed exposed on a hillside will produce an outcrop pattern that:
A) Parallels topographic contours
B) Crosses contours at 90°
C) Forms straight lines
D) Always points downstream
CORRECT ANSWER: A
EXPERT RATIONALE: Horizontal beds intersect topography at constant elevation. Their
contacts therefore follow topographic contour lines.
QUESTION 6
The three-point problem is used to determine:
A) The attitude of a planar surface from three known elevations
B) Ore grade
C) Earthquake epicenters
D) Groundwater flow velocity
CORRECT ANSWER: A
EXPERT RATIONALE: Three points of known elevation on a plane can be used to
construct strike and dip. This is a standard field and map technique.
QUESTION 7
Apparent dip is:
A) Always greater than true dip
, 4|Page
B) Equal to true dip only in the dip direction
C) Less than or equal to true dip
D) Independent of strike
CORRECT ANSWER: C
EXPERT RATIONALE: Apparent dip is measured in any direction other than true dip. It is
always less than true dip except when measured exactly in the true dip direction.
QUESTION 8
What is the apparent dip of a bed along its strike direction?
A) 30°
B) 0°
C) 15°
D) 90°
CORRECT ANSWER: B
EXPERT RATIONALE: Along strike there is no vertical change in the bed. Apparent dip is
therefore zero.
QUESTION 9
Vertical exaggeration on a topographic profile equals:
A) Horizontal scale divided by vertical scale
B) Vertical scale divided by horizontal scale
C) Horizontal scale multiplied by vertical scale
D) Contour interval divided by map scale
CORRECT ANSWER: B
EXPERT RATIONALE: Vertical exaggeration is the ratio of the vertical scale to the
horizontal scale. A larger vertical scale produces higher vertical exaggeration.
