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8th Science chp 7

TermDefinition
body wave a seismic wave that travels through the Earth's interior
earthquake shaking and vibration of Earth's surface
epicenter the point on the Earth's surface directly above the focus of an earthquake
fault the fracture in the Earth's crust where the rocks on either side have moved
focus the point within the Earth where the earthquake originates
P wave the fastest of the seismic waves that make the material move back and forth parallel to the direction that the wave is moving
S wave the slowest of the seismic waves that makes material move up and down perpendicular to the direction the wave is moving
seismic wave vibration produced by an earthquake
seismogram a graphical record of ground vibrations
seismograph an instrument that measures and records ground vibrations
aftershock smaller earthquake that follows a more powerful earthquake in the same area
liquefaction process in which shaking of the ground causes soil to act like a liquid
normal faults the block of rock above the fault plane slides down relative to the other block
reverse faults the block of rock above the fault plane moves up relative to the other block
stress the force exerted when an on object presses on, pulls on, or pushes against another object
strike-slip faults blocks of rock moves sideways on either side of the fault plane
tsunami water wave triggered by an earthquake, volcanic eruption, or landslide
Created by: robinkuhn
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