ASBOG-FG Question and answers
rated A+ 2025/2026
Accuracy - correct answer ✔How close to a measurement conforms with a standard or accepted value.
Apparent dip (α) - correct answer ✔The inclination of a plane measured in a direction not
perpendicular to strike.
Apparent dip direction - correct answer ✔The bearing of the vertical plane containing the apparent dip
angle.
Attitude - correct answer ✔The orientation in space.
β - correct answer ✔The angle between strike and the apparent dip direction.
Bearing - correct answer ✔The horizontal angle between a line and a specified coordinate direction,
usually north or south.
Dip (δ) - correct answer ✔The inclination of the line of greatest slope of an inclined plane, measured
perpendicular to strike.
Fold Line - correct answer ✔A hinge line along which a vertical cross section may be constructed and
the flattened out to a horizontal or map view.
Inclination - correct answer ✔A general term for the vertical angle between the horizontal and a plane
or line measured downward.
, Outcrop Width (w) - correct answer ✔The width of an outcrop, as measured on a map view,
perpendicular to strike.
Pole - correct answer ✔A line perpendicular to a plane, and represented as a point on a stereographic
projection.
Plunge - correct answer ✔The vertical angle between a line and horizontal.
Precision - correct answer ✔The degree of agreement or consistency of repeated measurements
Projection - correct answer ✔The process by which points on one surface are transferred to another
surface, such that in each view (map or cross section) the points correspond.
Rake (Pitch) - correct answer ✔The angle measured in a specific plane, between a line and the
horizontal.
Slope Angle (σ) - correct answer ✔The angle from the horizontal down to the slope.
Stereonet - correct answer ✔A representation of angular relationships between planes and lines. In
structural geology, a stereonet is synonymous with Wulff net, an equal angle stereographic projection.
Strike - correct answer ✔The bearing of a horizontal line in an inclined plane.
Thickness (t) - correct answer ✔The perpendicular distance between the top and bottom of a geologic
unit.
Trend - correct answer ✔The bearing of the vertical plane containing a line.
rated A+ 2025/2026
Accuracy - correct answer ✔How close to a measurement conforms with a standard or accepted value.
Apparent dip (α) - correct answer ✔The inclination of a plane measured in a direction not
perpendicular to strike.
Apparent dip direction - correct answer ✔The bearing of the vertical plane containing the apparent dip
angle.
Attitude - correct answer ✔The orientation in space.
β - correct answer ✔The angle between strike and the apparent dip direction.
Bearing - correct answer ✔The horizontal angle between a line and a specified coordinate direction,
usually north or south.
Dip (δ) - correct answer ✔The inclination of the line of greatest slope of an inclined plane, measured
perpendicular to strike.
Fold Line - correct answer ✔A hinge line along which a vertical cross section may be constructed and
the flattened out to a horizontal or map view.
Inclination - correct answer ✔A general term for the vertical angle between the horizontal and a plane
or line measured downward.
, Outcrop Width (w) - correct answer ✔The width of an outcrop, as measured on a map view,
perpendicular to strike.
Pole - correct answer ✔A line perpendicular to a plane, and represented as a point on a stereographic
projection.
Plunge - correct answer ✔The vertical angle between a line and horizontal.
Precision - correct answer ✔The degree of agreement or consistency of repeated measurements
Projection - correct answer ✔The process by which points on one surface are transferred to another
surface, such that in each view (map or cross section) the points correspond.
Rake (Pitch) - correct answer ✔The angle measured in a specific plane, between a line and the
horizontal.
Slope Angle (σ) - correct answer ✔The angle from the horizontal down to the slope.
Stereonet - correct answer ✔A representation of angular relationships between planes and lines. In
structural geology, a stereonet is synonymous with Wulff net, an equal angle stereographic projection.
Strike - correct answer ✔The bearing of a horizontal line in an inclined plane.
Thickness (t) - correct answer ✔The perpendicular distance between the top and bottom of a geologic
unit.
Trend - correct answer ✔The bearing of the vertical plane containing a line.
