1. What is the planar surface of fracture along which relative displacement of bodies has taken place called?
a) Fault plane
b) Fold plane
c) Stress plane
d) Strain plane
Explanation: Fault plane is the planar surface of fracture along which relative displacement of the blocks takes place during the process of faulting. When it is not planar, the same surface is simply described as fault surface
2. What is the angle of fault plane with the horizontal called?
a) Hade
b) Strike
c) Dip
d) Inclination
Explanation: The dip of the fault is its inclination with the horizontal as measured in a vertical plane at right angles to the strike of the fault.
3. Parameter(s) considered for dip is ___________
a) Direction
b) Angle
c) Direction and angle
d) Neither direction nor angle
Explanation: The dip is measured both in terms of the direction of dip as well as angle of dip just as in the bedding plane of strata.
4. What is hade?
a) Inclination of fault with horizontal
b) Inclination of fault with vertical
c) Inclination of fault with any strata
d) Bearing of the fault with ground
Explanation: The hade of the fault is the angle which the fault makes with the vertical. In other words, it is the complimentary to the dip angle.
5. What is the bearing of a line of intersection of fault plane and horizontal called?
a) Strike
b) Dip
c) Hade
d) Intersection line
Explanation: The strike of the fault is the bearing or geographical direction of a line obtained by the intersection of a horizontal plane with the fault plane.
6. A fault has how many walls?
a) 1
b) 2
c) 3
d) 4
Explanation: In faults, the concept of walls is very important and must be understood very clearly. In a rock body, when a fracture takes place, it divided the rock into two parts or two blocks.
7. It is easy to locate older and major folds.
a) True
b) False
Explanation: It may be easy to locate fault planes or fault surfaces in small scale and in rather recent faults. In older and especially major faults spreading over miles of area, however, extensive field work including drilling or subsurface investigations using geophysical methods may be required to determine these structures.
8. What is the block which suffer displacement in faulting called?
a) Walls
b) Parts
c) Sections
d) Blocks
Explanation: The blocks which suffer displacement and stand on either sides of the fracture are called as walls. Generally there exist two types of walls, hanging wall and foot wall.
9. The block which lies on the under surface of fault plane or zone is called ___________
a) Hanging wall
b) Sub-wall
c) Foot wall
d) Lower wall
Explanation: The term foot wall is used for that faulted block which lies on the under surface of the fault plane or zone.
10. Who coined the terms “hanging wall” and “foot wall”?
a) Scientists
b) Geologists
c) Engineers
d) Miners
Explanation: Actually the terms “hanging wall” and “foot wall” have been coined by the miners: while traversing along a track excavated in fault plane, the wall under their feet would be foot wall whereas the other block would hang above their heads.