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21 Cards in this Set

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  • Back
magnitude
The measurement of an earthquakes strength based on seismic waves and movement along faults
Fold
A bend in rock froms where part of Earth's crust is compressed
earthquate
The shaking that results from the movement of rock beneath Earth's surface
Anticline
An upward fold in rock formed by compressionof Earth's crust
Hanging wall
The block of rock that forms the upper half of a fault
footwall
The block of rock that forms the lower half of a fault
Seismograph
A device that records ground movements caused by seismic waves as they move through Earth.
Tusunami
A giant wave caused by an earthquake on the ocean floor
Syncline
A downward fold in rock formed by compressionin Earth's crust
Base-isolated building
A building mounted on bearings designed to absorb the energy of an earthquake
Fault
A break in Earth's crust where slabs of rock slip past each other
Stress
A forcethat acts on rock to change its shape or volume
Epicenter

the point on earth's surface directly abouve an earthquake focus.


Strike-slip fault



A type of fault where rocks on either side move past each other sideways with little up-or down motion
Aftershock
An earthquake that occurs after a laarger earthquake in the same area
Liquefaction
The process by which an earthquakes violent movement suddenly turns loose soil into liquid mud
deformation
A change in the volume or shape of Earth's crust
Shearing


Tension
Stess that pushes a mass of rock inopposite directions

Stess that sretches rock so that it becomes thinner in the middle.
Focus
The point beneath Earth's surface whee rock breaks under stress and causes an earthquake.
Fault Block mountain
A mountain that forms wher a normal fault uplifts a block of rock
Normal Fault
A type of fault where the hanging wall slides downard: caused by tension in the frust