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Earthquake words

Definitions

QuestionAnswer
epicenter point on earths surface directly above an earthquake focus .
fualt fracture that occurs when rocks break and that results in a relative movement of opposing sides;can form as a result of compression,being pulled apart or shear.
focus point deep inside earth were energy is released cuasing an earthquake.
lava molten rock flowing onto earths surface
lithosphere rigid layer of earth about 100km thick, mmade of the crust and a part of the upper mantle.
magnitude a measure of the energy released by an earthquake
rifts long crack, fissure, or trough that forms between tectonic plates moving apart at plate boundary.
seismic safe describes the ability of structures to stand up againts the vibrations caused by an earthquake
seismic waves earthquake waves including primary waves secondary waves and surface waves.
seismograph instrumental used to record waves.
tsunami powerful seismic sea wave that begins over an ocean floor earthquake can reach over 30min hieght when approching land and can destruction in costal areas
Created by: cahiembrown
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