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Ch. 8 Vocabulary

Ch. 8 Vocabularyy

QuestionAnswer
Ellie M. 16 7B
Seismology The study of earthquakes
Deformation The bending, tilting, and breaking of the Earth's crust; the change in the shape of rock in response to stress
Elastic Rebound The sudden return of elastically deformed rock to its undeformed shape
Seismic Wave A wave of energy that travels through the Earth, away from an earthquake in all directions
P wave A seismic wave that causes particles of rock to move in a back-and-forth direction
S wave A seismic wave that causes particles of rock to move in a side-to-side direction
Seismograph An instrument that records vibrations in the ground and determines the location and strength of an earthquake
Seismogram A tracing of earthquake motion that is created by a seismograph
Epicenter The point on Earth's surface directly above an earthquake's starting point, or focus
Focus The point along a fault at which the first motion of an earthquake occurs
Gap Hypothesis A hypothesis that is based on the idea that a major earthquake is more likely to occur along the part of an active fault where no earthquakes have occurred for a certain period of time
Seismic Gap An area along a fault where relatively few earthquakes have occurred recently but where strong earthquakes have occurred in the past
Created by: miko380
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