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earthquakes
earthquakes ch.2 lesson 2
Question | Answer |
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earthquake | a sudden and violent shaking of the ground sometimes can cause destruction |
crust | form into a harder outer layer |
fault | a crack in a rock along which slippage has occured |
mantle | the region of the interior of the Earth between the core |
lithosphere | hard rigid outer layer of the earth |
lithospheric plates | divided into a number of crustal plates |
siesmoligists | scientific study of earthquakes |
p-waves | a longitudinal earthquake wave that travels through the interior |
s-waves | a downward deflection of the QRS complex |
surface waves | a seismic wave that travels that travels across the surface |
focus | central point as attraction attention or activity |
epicenter | the point Earth's surface directly above an earthquakes focus |
richter scale | measures magnitude out of the earthquakes |
moment-magnitude | measures the total energy released from earthquake |
mercalli scale | measuring the intensity of an earthquake |
seismic waves | an elastic wave in earth produced by an earthquake |
magnitude | the great size or extent of something |
seismograph | an instrument that measures and records details |
liquefaction | a phenomenon in which the strength and stiffness |
aftershock | a smaller earthquake following the main shock of a large earthquake |
Tusunami | long high sea wave |
base isolater | is meant to enable a building or non structure to survive |
shear core walls | center of a large building |
tension ties | eyebar guy-wire suspension cables |
cross bracing | is a system utilized to reinforce building |
mass damper | reduces amplitude of mechanical vibrations |
flexible pipe | is characterized by a compsite construction |