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WorksheetsCh 11 ESR - Mountain Building
Total questions: 20
Worksheet time: 10mins
Once their strength is exceeded, rocks near the surface behave like
clay
metal
glass
At depth, where temperatures and pressures are high, rocks exhibit
brittle deformation
ductile deformation
Which stress causes rocks to be pulled in opposite directions, hence may cause them to stretch?
Tensional stress
Compressional stress
Shear stress
Based on the principles of isostasy, which of the following is false?
Thick sections of crustal material float higher than thinner slabs.
A mountain will ultimately be eroded to near sea level.
The concept of a floating crust in gravitational balance is isostasy.
A thickened block would sink and the top would be lower than before.
Which of the following statements is true for folding in sedimentary rock layers?
Upfolds are called synclines.
Symmetrical folds are called monoclines.
Downfolds are called synclines.
Overturned folds have no trough.
Faults are generally closely associated with
monoclines
anticlines
synclines
symmetrical folds
The movement of crust in a normal fault is
Mostly vertical direction
Mostly horizontal direction
Only vertical direction
Equally in vertical and horizontal direction
Faults that occur due to tensional stress are called
Normal
Reverse
Thrust
Strike-slip
Which of the following can be produced at an ocean continental convergence?
continental volcanic arc
volcanic island arc
mid-ocean ridge
graben bounded by horsts
An accumulation of different sedimentary and metamorphic rocks combined with scraps of ocean crust are called
dome
volcanic island arc
accretionary wedge
fault-block mountain
Which of the following is associated with divergent boundaries?
continental volcanic arc
volcanic island arc
mid-ocean ridge
graben bounded by horsts
Factors that influence the strength and deformation of a rock include ___________, pressure, rock type, and time.
stress
flow
temperature
water
A distortion in rock with no change in volume is caused by ___________.
tensional stress
compressional stress
shear stress
Upfolding most often results in
anticline
syncline
monocline
Large-scale displacement of rock layers occurs most often in
Normal faults
Reverse faults
Thrust faults
Strike-slip faults
In a(n) ___________ fault, the hanging wall block moves up relative to the footwall block.
Normal
Reverse
Strike-slip
Fault-block mountains form when large blocks of crust are ___________ and tilted along normal faults.
downlifted
uplifted
pulled
pushed
In domes, the _______ rocks are found in the core
Oldest
Youngest
A process called ___________ occurs when fragments of crust collide with a continental plate and become stuck to or embedded into the continent.
deformation
accretion
uplifting
isostasy
Most mountain-building occurs at ___________ plate boundaries.
convergent
divergent
transform
