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Earthquake Vocab.

Definitions

QuestionAnswer
Epicenter point on Earth's surface directly above on earthquake's focus
Fault the surface of such a break along which rock moves
Lava molten rock flowing onto Earth's surface
Lithosphere rigid layer of Earth about 100 km thick, made 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 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 the slowest and largest of the seismic waves and they cause the most damage during a Earthquake.
Seismograph(also P and S waves) an instrument they use to obtain a record of seismic waves from all over the world
Tsunami powerful seismic sea waves that begins over at ocean-floor earthquake, can reach 30 min height when approaching lang, and can cause destruction in coastal areas
Volcanoes cone-shaped hill or mountain formed when hot magma,solids, and gas erupt onto Earth's surface through a vent
Pyroclastic flow hazard for inhabitants of Montserrat
Ritcher Scale a scale to see the amount of seismic energy released by an earthquake
Hypocenter the region of initiation of seismic energy within the Earth during earthquakes
Rayleigh waves move along the surface of Earth form a wave thta is much like a ocean wave
Hypocenter the region of initiation of seismic energy within the Earth during earthquakes
Rayleigh waves move along the surface of Earth form a wave thta is much like a ocean wave
Love waves displace Earth material at the surface in a horizontal snake-like motion.They don't travel through water
Created by: jul.t704
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