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Earthqukes 712

vocabuary words and definitions

QuestionAnswer
EPICENTER point on Earth surface directly above an earthquake's focuc.
FAULT fracure that occurs when rocksbreak and that result in relative movement of opposit sides;can form as a result of compression (reverse fault), being pulled apart(normal fault),or shere (strike-slip fault).
FOCUS point deep inside Earth where energy is relased,causing an earthquake.
LAVA molten rock flowing on Earth's surface.
LITHOSPHERE rigit layer of the Earth above 100km thick, made of the crust and a part of the upper mantle.
MAGNITUDE a measure of the energy released by earthquake.
RIFTS long crack,fissure, or through that forms between tectonic plates moving apart at plate boundaries.
SEISMIC SAFE describes the abillity of structures to stand up against the vibration caused by an earthquake.
SEISMIC WAVES earthquake waves, including primary waves, secondary waves, and surface waves.
SURFACCE WAVES the waaves that formed in Earth surface.
SEISMOGRAPH instrument used to record seismic waves.
Tsunami powerful seismic sea wave that begins over on ocean-floor earthquake, can reach 30m in heignt when approaching land and can cous destruction in coastal area.
Volcanoes cone-shaped hill or mountain form when hot magma solids and gas erupt onto Earth's surface throught a vent.
Pyroclastic Flow massive avalanches of hot glowing rock foling on a cushion of intensely hot gases.
Richter Scale manitude is based on Measurement of amplitudes or heights, of seismic waves as recordet on seismographs.
Created by: maryana1198
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