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Science 5/12

TermDefinition
stress a force that acts on rock to change its shape or volume
tension stress that stretches rock so that it becomes thinner in the middle
compression stress that squezes rock until it folds or breaks
shearing stress that pushes rock in opposite directions, in a sideways movement
normal fault a type of fault where the hanging wall slides downward; caused by tension in the crust
reverse fault a type of fault where the hangin wall slides upward; caused by compression in the crust
strike-slip fault a type of fault in which rocks on either side move past each other sideways with little up or down motion
plateau a large landform that has high elevation and a more or less level surface
earthquake the shaking that results from the movement of rock beaneath
focus the point beaneath earth's surface where the rock first breaks under stress and causes an earthquake
epicenter the point on Earth's surfucce directly above an earthqaukes focus
p wave a type of sisemic wave that compresses and expands the ground
s wave a type of sisemic wave in which the shaking is perpendicular to the directions of the wave
surface wave a type of sisemic wave that formd when p wave and s waves reach Earth's surface
seismograph a device that records ground movements caused by seismic waves as they move through Earth
modified Morcalli scale a scale that rates the amount of shaking from an earthquake
magnitude magnitude the measurement of an earthquake's strength based on its seimic waves and movement along faults
Richter scale a scale of an earthquake's magnitude base on the size of its sisemic waves
moment magnitude scale a scale that rates earthquakes by eatimating the total energy realeased by an eearthquake
seismogram the record of an earthquakes sisemic waves produced by a sisemograph
Created by: thedurantula35
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