Ch.5 Flashcards
The study of earthquakes.
Seismology
The bending, tilting, and breaking of the Earth’s crust; the change in the shape of rock in response to stress.
Deformation
The sudden return of elastically deformed rock to its undeformed shape.
Elastic Rebound
A wave of energy that travels through Earht, away from an earthquake in all directions.
Seismic Wave
A seismic wave that causes particles of rock to move in a back-forth motion.
P Wave
A seismic wave that causes particles of a rock to move in a side-side direction.
S Wave
An instrument that records vibrations in the ground and determines the location and strength of an earthquake.
Seismograph
a tracing of earthquake motion that is created by a seismograph.
Seismogram
The point on the earth’s surface directly above an earthquake’s staring point, or focus.
Epicenter
The point along a fault at which the first motion of an earthquake occurs.
Focus
A hypothesis that is based on the idea that a major earthquake is more likely is more likely to occur along the part of an active fault where no earthquake
Gap Hypothesis
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Seimic Gap