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Earthquakes

questions and vocab

WordDefinition
Mercalli scale scale that expresses the intensity of an earthquake with a roman numeral and a description.
P waves the fastest wave generated by an earthquake and the first to be recorded by a seismograph.
earthquakes the vibration of the Earth's crust
S waves a wave generated by an earthquake by an earthquake and the second to be recorded by seismography.
Elastic rebound theory theory that the rocks that are strained past a certain point will fracture and spring back to their original shape
focus area along a fault at which slippage first occurs, initiating an earthquake. Often located within the lithosphere.
Pacific Ring of Fire Major earthquake zone that forms a ring around the pacific Ocean.
fault zone a group of interconnected faults.
seismograph instrument used to detect and record seismic waves
aftershocks tremor that follows and is smaller than a major earthquake.
surface waves the slowest moving seismic wave and te last to be recorded by a seismograph/.
seismic gaps a zone of rock in which a fault is locked and unable to move and in which no major earthquake has occurred for a long period of time.
tsunami giant ocean wave
Popular Earth Science sets

 

 



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