Parrael rock fractures that occur along numerous falt surfaces are called:
What is joints
100
The outermost layer of the Earth is called the _________.
What is crust
100
The rocky outermost layer of earth is the :
a. core
b. crust
c. mantle
d. continental plate
What is crust
100
Deformation is
a. the breaking of rocks
b. the tilting of rocks
c. the folding of rocks
d. any of these
What is any of these
100
Who does stress affect the Earth's crust?
What is Stress causes rocks to change shape and volume
200
A fault that is formed when compression causes the hanging wall to move over the foot wall is called a (an)
What is Thrust Fault
200
Moutains formed by blocks of rock uplifted by normal faults are called ______________.
What is Fault block mountains
200
The form of stress that pulls apart rocks of the crust is:
a. tension
b. compression
c. contraction
d. compaction
What is tension
200
Mantle rocks:
a. are less dense than crust rocks
b. cannot move
c. float on crust rocks
d. flow slowly
What is flow slowly
200
Compare folding and faulting
What is Faulting occurs when rocks slide past each other. Folding occurs when rocks bend rather than break.
300
Rocks that bend easily are said to be:
What is ductile
300
An upward fold is called an ______________
What is anticline
300
A block of rock above a fault is called the:
a. anticline
b. syncline
c. foot wall
d. hanging wall
What is hanging wall
300
The Grand Canyon was formed by a river that cut through a:
a. plateau
b. rift valley
c. fault block mountian
d. dome
What is a plateau
300
Which are less dense, the crustal rocks or the mantle rocks?
What is the crustal rocks are less dense than the mantle rocks.
400
A low area formed when a block of land between two normal faults slides downward is called a (an)
What is rift valley
400
Molten rock found beneath the Earth's surface is called _________.
What is magma
400
Rocks are more likely to fault than fold if they are:
a. ductile
b. extremely hot
c. under much pressure
d. brittle
What is brittle
400
Movement of a block of rock along a fault:
a. is always upward
b. is always downward
c. is always sideways
d. can be upward, downward or sideways
What is can be upward, downward or sideways
400
What balances the downward force of the crust?
What is the mantle's upward force balances the downward force of the crust.
500
The balancing of upward and downward forces that act between the two outermost layers of the earth is called:
What is Isostasy
500
The squeezing together of rocks by stress is called:
What is compression
500
Magma pushing on rock layers may cause them to fold sharply upward into a blisterlike structure called a :
a. syncline
b. dome
c. fault block mountain
d. plateau
What is Dome
500
When tension acts on rocks, the rocks are:
a. pushed together
b. pushed in two opposite, horizontal directions
c. tilted
d. pulled apart
What is pulled aprt
500
What happens when sediments are deposited on the ocean floor?
What is when the sediments are deposited on the ocean floor, the crust sinks slightly.