Study Science- Deforming the Earth's Crust Flash Cards

 
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Science- Deforming the Earth's Crust

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A(n) _______________ is a set of deep cracks that forms between 2 tectonic plates that are pulling away from each other.
rift zone
When the crust ______________, it springs back to its previous elevation.
rebounds
What type of mountains form at divergent boundaries?
fault-block mountains
What types of mountains form at convergent boundaries?
1. folded mountains
2. volcanic mountains
The sinking of regions of Earth's crust to lower levels is called ________.
subsidence
The rising of regions of Earth's crust to higher elvations is called ______.
uplift
______________ mountains form at convergent boundaries where oceanic crust sinks into the asthenosphere at subduction zones.
volcanic
___________ mountains occur when tension causes large blocks of the Earth's crust to drop down realtive to other blocks
fault-block
______________ mountains form when rock layers are squeezed together and pushed upward.
folded
The type of fault that occurs when forces cause rock to break and move horizontally
strike-slip fault
Type of fault that occurs when tectonic plates cause compression that pushes rocks together
reverse fault
Type of fault that occurs when tectonic plates cause tension that pulls rocks apart
normal fault
A break in a body of rock along which one block slides relative to another.
fault
The type of fault at which hanging wall move up relative to footwall
reverse fault
The type of fault at which the hanging wall moves downward relative to footwall
normal fault
The 2 sides of a fault are called ___________ and ___________.
1. hanging wall
2. footwall
The blocks of rock alog each side of a fault are called ________.
fault blocks
The surface along which rocks break and slide is called ______.
fault
The type of fold that occurs due to vertical stress is ______________.
monocline
The 2 types of folds that occur due to horizontal stress are ___________ and _________.
1. syncline
2. anticline
Name 3 different types of folds that occur in rock.
1. anticline (rock folds upward-most common)
2. syncline (rock folds downward)
3. monocline (both ends of fold are horizontal)
The bending of rock layers due to stress is called ______________.
folding
Name 2 types of stress that deform rocks.
1. compression
2. tension
_____________ is stress that occurs when forces act to strestch an object.
tension
When ____________ occurs at a convergent boundary, large mountain ranges can form.
compression
The process by which the shape of a rock changes because of stress is called _____________.
deformation
The type of stress that occurs when 2 tectonic plates collide
compression
______________ is the amount of force per unit area on a given material.
stress
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