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Earthquake Vocab

TermDefinition
focus the point underground where rocks first begin to move. Seismic waves travel out from here
tsunami a water wave that is triggered by an earthquake, volcanic eruption, or landslide, can make water rise more than the height of a 20- story building
fault a fracture, or break, in Earth’s lithosphere, along with blocks of rock move past each other
seismograph an instrument that constantly records ground movement
stress the force exerted when an object presses on, pulls on, or pushes against another object
earthquake shaking of the ground caused by the sudden movement of large blocks of rock along a fault
liquefaction a process in which shaking of the ground causes soil to act like a liquid
epicenter the point on Earth’s surface directly above the focus
seismic waves earthquake energy travels as these; vibrations caused by earthquakes
aftershock a smaller earthquake that follows a more powerful earthquake in the same area
Created by: user-1668205
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