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Forces Within the Earth & Earthquakes and Scientific Activity Review
Terms in this set (37)
A force that acts on rock to change its shape or volume
the stress that pulls on the crust and thins rock in the middle. When two plates pull apart.
The stress force that squeezes a rock until it folds or breaks. Where two plates come together.
Stress that pushes a mass of rock in two opposite directions. Occurs where two plates slip past each other.
The maximum extent to which a solid may be stretched without alteration of size or shape.
change of shape of a material at low stress that is reversable after stress is removed.
Forces cause sections of Earth's surface, called __________, to move.
When rocks break, they move along surface called ________.
An ________ is the vibrations produces by the breaking of rock.
At a ________ fault, tension pulls rocks apart.
At a __________ fault, rocks move past each other.
At a normal fault, rock above the fault surface moves _______ in relation to rock below the fault surface.
At a ________ fault, rocks above the fault surface move up and over the rocks below the fault surface.
At a reverse fault, _________ forces pushes on rocks from opposite directions.
_______ forces can cause strike-slip faults.
At a normal fault, __________ forces pull rocks apart.
In a reverse fault, where does the hanging wall move relative to the footwall?
In a reverse fault, where does the footwall move relative to the hanging wall?
A large area of flat land elevated high above sea level
vibrations that travel through Earth carrying the energy released during an earthquake
In what order do the three types of seismic waves arrive at a seismograph?
P waves, S waves, surface waves
Which type of seismic wave produces the most severe ground movement and is the slowest?
How do scientists locate the epicenter?
Using seismic waves
What is the moment magnitude scale used for?
Rating the total energy an earthquake produces
The point beneath Earth's surface where rock breaks under stress and causes an earthquake
the point on the surface directly above the point at which an earthquake occurs
records the ground movements caused by seismic waves as they move through the Earth
A fold in rock that bends upward into an arch
A fold in rock that bends downward to form a valley
The block of rock that lies above a fault is called the _________.
What event can cause damage days after a large earthquake?
In a normal fault, the part that lies below the other part is called the ________.
What causes rock to break and move at a fault?
What is the stress force that squeezes rock until it breaks called?
How can Earth's crust be changed over time?
forces changing the shape of the crust
What kind of stress causes a normal fault?
How is stress, stored in rocks, released?
The energy is built up
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