Please help with the following questions, thank you. The strike and dip of a roc
ID: 155109 • Letter: P
Question
Please help with the following questions, thank you.
The strike and dip of a rock refer to:
A)the orientation of a rock unit in relation to the surface of the Earth.
B)the orientation of a rock unit in relation to neighboring rock units.
C)the directions in which a rock points.
D)he orientation of the exposed surface of a rock.
Resistant sandstone in the trough of a syncline would eventually form which topographic feature?
A)An anticlinal valley.
B)A synclinal valley.
C)A deep canyon.
D)Topographic ridges.
The Mercalli intensity scale is ineffective in providing information about all of the following earthquake effects EXCEPT:
A) location of the earthquake epicenter.
B) determination of damage due to actual ground motion.
C) utilitization in uninhabited parts of the world
D) characterization of historical earthquakes.
Which of the following terms is NOT described correctly?
A) A seismic wave is the way earthquake energy is transmitted through the Earth.
B) A seismograph is an instrument that measures the magnitude of an earthquake.
C) A seismometer is the scale used for measuring seismic waves.
D) A seismogram is a visual record of seismic waves and their amplitudes.
Which of the following statements concerning liquefaction is NOT true?
A) It is caused when a substantial quantity of groundwater is forced into unconsolidated sediment.
B) Previously cohesive sediment is caused to flow like a slurry of mud.
C) Water pressure between sediment grains removes frictional contact between them.
D) Liquefaction can cause virtual geysers of sand.
When Benioff-Wadati zones are plotted on a map, they show:
A) elastic modulus values in rocks within a subduction zone.
B) semiconcentric zones of varying degrees of earthquake damage.
C) earthquake numbers decreasing away from areas of oceanic rifting.
D) earthquake foci becoming progressively deeper inland from ocean trenches.
Major earthquakes are most likely to occur in all of the following tectonic settings EXCEPT
A) transform boundaries.
B) divergent boundaries.
C) subduction zones.
D) continental collision boundaries.
Which type of rock is most likely to contain fossils?
A)Igneous rocks.
B)Metamorphic rocks.
C)Sedimentary rocks.
D) All of the above.
Of the following organisms, the best index fossils would be:
A) cockroaches, because they have existed in widespread geographic areas almost since the first appearance of insects.
B) bacteria, because they have existed in widespread geographic areas since life first began.
C) a specific type of bryzoa that existed for only a short geologic time in very limited geographic areas.
D) a specific type of trilobite that existed for only a short geologic time in widespread geographic areas.
Explanation / Answer
1.B)the orientation of a rock unit in relation to neighboring rock units.
2.D)Topographic ridges.
3.C) utilitization in uninhabited parts of the world
4,A) A seismic wave is the way earthquake energy is transmitted through the Earth.
5.C) Water pressure between sediment grains removes frictional contact between them
6.D) earthquake foci becoming progressively deeper inland from ocean trenches.
7.B) divergent boundaries.
8.D) All of the above.
9.B) bacteria, because they have existed in widespread geographic areas since life first began.