Exam (elaborations)
APSC 151 MIDTERM QUESTIONS AND ANSWERS
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APSC 151 MIDTERM QUESTIONS AND ANSWERS
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Name: Score:142 Multiple choice questions
Term 1 of 142
In thrust faulting, ____________.
grabens develop on the footwall block
the crust is shortened and thickened
horizontal, tensional stresses drive the deformation
the hanging wall block slips downward along the thrust fault
Term 2 of 142
The mechanism by which rocks store and eventually release energy in the form of an
earthquake is termed __________.
elastic rebound
seismic rebound
fault displacement
stress fracture
Term 3 of 142
If an earthquake occurred 2400 km away from a seismic station, how long after the earthquake
would
the station detect the arrival of a P-wave travelling at 8000m/s?
5 minutes
3 minutes
30 second
5000 seconds
,Term 4 of 142
Approximately how much more energy is released in a 6.5 Richter magnitude earthquake than
in one with magnitude 5.5?
3000 times
3 times
300 times
30 times
Term 5 of 142
What is the direct control on whether a volcano will erupt violently or quietly send out a few
flows^
what the total volume of the volcano has at time of the eruption
the duration of the quiet interval since its last violent eruption
the composition of the magma, its temperature, and dissolved gas content
Term 6 of 142
The average composition of the continental crust most closely approximates that of __________.
granite
basalt
peridotite
iron
Term 7 of 142
Large circular downwarped structures are called __________.
anticlines
synclines
basins
domes
,Term 8 of 142
One possible catalyst for the early genesis of RNA molecules could be:
olivene crystals
cytoplasm
phospholipid capsules
montmorillonite clay
Term 9 of 142
In a normal fault ____________.
the hanging wall block below an inclined fault plane moves downward relative to the
other block
the footwall block below an inclined fault plane moves downward relative to the other
block
the hanging wall block above an inclined fault plane moves downward relative to the
other block
the footwall block above an inclined fault plane moves upward relative to the other
block
Term 10 of 142
A 1 litre jar full of lead pellets is melted down and cooled to form 750ml of solid lead. What
was the
porosity of the original jar of pellets?
33%
0.25
250 ml
3:1
, Term 11 of 142
Which one of the following statements is not correct?
Metamorphic rocks may melt to magma.
Sedimentary rocks may weather to igneous rocks.
Magmas crystallize to form igneous rocks.
Igneous rocks can undergo metamorphism
Term 12 of 142
Plates are sliding past one another horizontally along a ________ plate boundary.
Transform
convergent
divergent
subduction
Term 13 of 142
The Richter magnitude of an earthquake is determined from the __________.
duration of the earthquake
intensity of the earthquake
arrival time of P and S waves
amplitude of the surface waves
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