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earthquake/volcano

QuestionAnswer
Earthquake A movement or trembling of the ground that is caused by a sudden release of energy when rocks along a fault move.
Mercalli scale A seismological scale used to rate the intensity of an earthquake based on its observed effect on people,buildings, and the environment.
Tsunami A series of powerful waves caused by a large and sudden displacement of ocean water most often from underwater earthquakes but also from volcanic eruptions, landslides, or meteorites
Richter Scale A logarithmic scale used to measure the magnitude of earthquakes indicating the amount of energy they release
Aftershock A smaller earthquake following the main shock of a large earthquake
Fault A break in a body of rocks along which one block moves relative to another
P-waves A type of seismic body wave that is the fastest and first to arrive during an earthquake
S-waves A type of seismic wave that move rock particles side to side perpendicular to the direction of wave travel
Seismology the branch of science concerned with earthquakes and rated phenomena
Landslide the movement of a mass of rock, debri, or earth down a slope, primarily driven by gravity
Volcano An opening in the earth's crust through which molten rock, ash, and gases are ejected from below the surface
Epicenter the point on the earth's surface directly above the hypocenter, which is the point underground where an earthquake rupture begins
Seismograph A scientific instrument used to detect, measure, and record the motion of the ground caused by seismic waves from earthquakes, explosions, or other vibrations.
Focus the point where parallel rays of light converge or appear to diverge after being reflected or refracted
Ring of fire A horseshoe-shaped zone around the Pacific ocean characterized by frequent earthquakes and volcanic eruptions
liquefaction the process where loose, water-saturated soil temporarily loses its strength and behaves like a fluid often due to seismic shaking
Created by: user-1973394
 

 



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