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earthquakes

earthquake terms, words, and defintions

QuestionAnswer
Epicenter Point of the earths surface directly above an earthquakes focus.
Fault Fracture that occurs when rocks break and that results in relative movement of opposing sides.
Focus Point deep inside earth where enrgy is released,causing and earthquake.
Lava Molten rock flowing onto earths surface.
Lithosphere Rigid layer of earth about 100km thick, made of the crust and a part of the upper mantle.
Magnitude A measure of the energy released be an earthquake.
Rifts Long crack, fissure, or through that forms between tectonic plates moving apart at plate boundaries.
Seismic Safe Describes the ability of structures to stand up against the vibrations caused by an earthquake.
Seismic Waves Earthquake waves, including primary waves,secondary waves, and surface waves.
Surface Waves Slowest and largest of the seismic waves.
Seismograph Instrument used to record seismic waves.
Tsunami Powerful seismic sea wave that begins over an ocean floor earthquake, can reach 30m in height when approching land, and can cause destruction in coastal areas.
Volcanoes Cone shaped hill or mountain formed when hot magma, solids and gas erupt onto earths surface through a vent.
Pyroclastic Flow Another hazard for inhabitants of Montserrat.
Richter Scale The amptitude of the highest record of seismic wave.
Created by: galina704
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