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Name: __________________ Date: ________________
Geology 15 Mid Term I Fall 2013
5 pts. each except otherwise noted.
1. In the Figure below, where would you expect the worst shaking to occur?
a. A
b. B
c. C
d. D
2. In the same Figure, where would you expect the least shaking to occur?
a. A
b. B
c. C
d. D
3. A body wave that will not travel through a liquid is a ____________.
a. Gravity wave b. P wave
c. S wave
d. none of these is correct
The following seven questions refer to the faults in figure below.
4. Which of the above choices is a true reverse fault?
a. A b. B c. C d. D e. E f. F g. G
5. Which of the above choices is a true normal fault?
a. A b. B c. C d. D e. E f. F g. G
6. Which is a blind thrust fault? a. A b. B c. C d. D e. E f. F g. G
7. Which is a right-lateral, strike-slip fault? a. A b. B c. C d. D e. E f. F g. G
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8. Fault G is an oblique fault, specifically a transtensional fault.
a. True
b. False
9. Which of the following fault(s) would result from stretching forces?
a. a&b
b. b&c
c. c
d. d
e. none of these choices
10. In Figure E, the hangwall (headwall) is up in relation to the footwall.
a. True
b. False
c. Can’t be determined without more data
11. Which of the following pairs of faults are the results of compressive stresses?
a. a&b
b. b&c
c. d&e d. none of these
12. The fault shown in the map view to the right is a
R.R track offset
a. Reverse fault
b. dip-slip fault
Fault
c. right-lateral, strike-slip fault
d. left-lateral, strike-slip fault
____________________________________________________________________________________
The following four questions refer to the two drawings below of steps in strike-slip fault systems (i.e.,
constraining or releasing bends)
FIGURE A
FIGURE B
13. Figure A is a _____________________________.
a. right-lateral strike slip fault system that causes compression.
b. right-lateral strike slip fault system that causes extension.
c. left-lateral strike slip fault system that causes compression.
d. left-lateral strike slip fault system that causes extension.
14. Figure B is a ______________________________.
a. right-lateral strike slip fault system that causes compression.
b. right-lateral strike slip fault system that causes extension.
c. left-lateral strike slip fault system that causes compression.
d. left-lateral strike slip fault system that causes extension.
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15. Magnetic stripes are areas of the oceanic crust that retain the magnetic field at the time of their
formation along oceanic ridges, usually display symmetric bands on either side of the ridge, and the
magnetic anomalies are older as one gets farther from the ridge.
a. True b. False
16. The point labeled A in the Figure below is ____________ .
a. the locus b. the epicenter c. the hypocenter
d. a fault scarp
17. The point labeled B in the Figure below is the ____________.
a. hexocenter
b. omnicenter
c. epicenter d. none of the above
18. C in the Figure below is the ________________.
a. hypocenter b. omnicenter c. fault scarp d. none of these
19. The Elastic Rebound Theory is made up of four parts. Which of the following is in the correct
sequential order?
a. stress, rebound, rupture, strain
b. rebound, rupture, stress, strain
c. stress, strain, rupture, rebound
d. none of these is correct
20. Which of the following is the correct order of the layers of the Earth from inside to outside?
A) inner core, outer core, crust, mantle
B) inner core, mantle, outer core, crust
C) crust, inner core, outer core, mantle
D) inner core, outer core, mantle, crust
E) mantle, inner core, crust, outer core
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21. Which of the following best describes the internal structure of the earth?
A) An orange, it has a thin peel with a solid, but watery inside
B) A bowling ball, it is completely solid all the way through
C) An egg, it is solid at the core, surrounded by liquid and then a hard outer shell
D) A geode, it is hollow at the center with a strong, hard, outside layer
E) A chocolate covered cherry, it is solid at the core surrounded by a liquid layer and semi-solid
layer, then covered in a thin solid coating
22. Where are earthquakes generally found?
A) convergent boundaries
B) divergent boundaries
C) Transform Fault boundaries
D) Hot spots
E) Earthquakes are found on all of the above locations
23. Which of the following is true about the Mid-Atlantic Ridge?
A) It is in the middle of the ocean
B) It is a divergent boundary where tectonic plates move apart
C) It is a place where new lithosphere is created
D) It is a site of deep see volcanoes and mountains
E) All of the above are true about the Mid-Atlantic Ridge
24. The energy for Plate Tectonics comes from
A) the magnetic field of the earth
B) heat from the sun
C) gravity between the earth and moon
D) ocean currents
E) heat from the earth's core
25. If you wanted to draw the boundaries of plates on a globe, which of the following maps would give
you the most complete information?
A) map of active volcanoes
B) map of mid-ocean ridges
C) map of earthquake distribution
D) map of the edge of continental shelves
E) map of hot spots
26. The Hawaiian Islands are an example of:
A) Two Ocean plates converging
B) Two Continental plates converging
C) Diverging plates
D) Hot Spots
E) Transform Fault Boundary
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27. The youngest seafloor rocks are found:
A) nearest to the mid-ocean ridges
B) nearest to the continental shelves
C) evenly distributed throughout the ocean
D) underneath the continents
E) where the ocean is the flattest
28. The inside of the Earth is composed of layers that have different properties.
a. True b. False
29. What is the difference between earthquake Intensity and Magnitude?
A) Only strong earthquakes have intensity
B) Intensity refers to the effects that earthquakes have, Magnitude refers to energy released
C) Intensity cannot be measured, but Magnitude can
D) Intensity refers to energy released and magnitude refers to energy released
E) Only weak earthquakes have intensity
30. How quickly do faults slip?
A) millimeters per second
B) millimeters per minute
C) millimeters per day
D) millimeters per year
E) Faults don't ever slip
31. (10 pts.) What are the main types of lithospheric plate boundaries, described in terms of relative
motions? Provide a real example of each (by name or location).
32. When oceanic lithosphere collides with another plate, the ________ in the process of subduction.
A. older, colder plate goes beneath the younger, warmer plate
B. younger, warmer plate goes beneath the older, colder plate
C. plates both disappear downward
D. plates pile up, forming mid-ocean ridges
33. ________ faults are commonly found at areas of plate convergence where subduction or continental
collision occurs.
A. Reverse
B. Normal
C. Transform
D. Strike-slip
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