Florida International University
Department of Earth Sciences
GLY 1010: Introduction to Earth Science
Practice Quiz (Not for credit)


 
 
 
 
1. The line formed by the intersection of an inclined sedimentary layer and a horizontal plane is called the ______.
A. fold axis
B. dip
C. bed
D. strike

 
2. The dip of a unit represents the ___________.
A. direction of intersection of the rock layer and a horizontal surface
B. part of the unit that has been eroded
C. angle at which the bed inclines from the horizontal
D. tilt of the rock unit before deformation

 
3. Which of the following types of tectonic forces tends to stretch rocks and pull them apart?
A. tensional forces
B. shearing forces
C. compressive forces
D. torsional forces

 
4. What type of forces dominate at convergent plate margins?
A. tensional forces
B. shearing forces
C. compressive forces
D. torsional forces

 
5. Which of the following statements about rock deformation is false?
A. Deep crustal rocks are more likely to deform ductilely than shallow crustal rocks.
B. Hotter rocks are more likely to deform ductilely than cooler rocks.
C. Most sedimentary rocks are more deformable than igneous rocks.
D. Rocks under low confining pressure are more likely to deform ductilely than rocks under high confining pressure.

 
6. What determines whether a rock deforms in a brittle fashion versus a ductile fashion?
A. temperature
B. pressure
C. rock type
D. temperature, pressure, and rock type

 
7. If a basalt unit near the surface of the Earth underwent compressive deformation, the result would most likely be __________.
A. folding
B. faulting
C. folding followed by faulting
D. faulting followed by folding

 
8. The surface that divides a fold into two symmetrical halves is called the __________.
A. axial plane
B. fold axis
C. fault
D. limb

 
9. What type of fold occurs in an area of intense deformation where one limb of the fold has been tilted beyond vertical?
A. an overturned fold
B. a reverse fold
C. an axial fold
D. an asymmetric fold

 
10. In an anticline, __________.
A. the oldest rocks occur in the center and the limbs dip toward the center
B. the oldest rocks occur in the center and the limbs dip away from the center
C. the youngest rocks occur in the center and the limbs dip toward the center
D. the youngest rocks occur in the center and the limbs dip away from the center

 
11. Which of the following statements about synclines is true?
A. The oldest rocks occur in the center and the limbs dip toward the center.
B. The oldest rocks occur in the center and the limbs dip away from the center.
C. The youngest rocks occur in the center and the limbs dip toward the center.
D. The youngest rocks occur in the center and the limbs dip away from the center.

 
12. What is the scientific term for a crack along which no appreciable movement has occurred?
A. joint
B. fault
C. fold
D. axis

 
13. Which of the following is not a dip-slip fault?
A. a right-lateral fault
B. a normal fault
C. a thrust fault
D. a reverse fault

 
14. What type of fault is characterized by the rocks above the fault plane (Hanging Wall) moving downward relative to the rocks below the fault plane (Foot Wall)?
A. a normal fault
B. a strike-slip fault
C. a reverse fault
D. all of these

 
15. What type of fault is a thrust fault?
A. a low-angle normal fault
B. a low-angle reverse fault
C. a low-angle strike-slip fault
D. a low-angle oblique fault

 

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