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book F chapter 2

tension stretches the crust so that it becomes thinner in the middle
compression squeezes rock until it folds or breaks
shearing pushes the rock in two opposite directions
because stress is a force it adds _____ to the rock energy
normal faults is caused by _____ tension
reverse faults are causes by ____ compression
strike slip fault rocks on either side of the fault slip past each other sideways with little up or down motion
anticline a fold in the rock that ends upward into an arch
syncline a fold in the rock that bends downward to form a valley
plateau a large area of flat land elevated above sea level
fault-block mountain land between two normal faults that move upward
focus the point in the ground where the rock breaks and triggers an earthquake
epicenter the point on the surface directly above the focus
which waves arrive first, are the fastest moving, have compressional motion, least damaging, and travel through solids and liquids? primary waves, also called p waves
which waves arrive second, have a side to side motion, and cannot travel through liquids? secondary waves, also called s waves
which waves are the slowest of waves, have a up and down motion, and are the most damaging? surface waves
which scale rates earthquakes based on the size of the seismic waves? richter scale
the ground movement caused by the waves are measured by a ______. seismograph
which scale is used to tell how much damage was done to homes and other buildings mercalli scale
which scale estimates the total energy released by an earthquake moment magnitude scale
tiltmeters measures tilting or raising of the ground , works like a carpenters' level
creep meters measures horizontal movement of the ground
GPS satellites measures vertical and horizontal movement
the risks of an earthquake is high along faults where two plates meet with a lot of? friction
the fault locks, and stress builds up until an ________ occurs. earthquake
Geologists cannot predict earthquakes because they cannot be sure where and when ____ will be released along a fault stress
Risk of earthquakes is high along the pacific coast of the united states because thats where the pacific and north american ____ meet plates
liquefaction when shaking turns loose soil into liquid mud
aftershocks a smaller earthquake that happens after the larger earthquake
tsunamis a giant wave caused by an earthquake in the ocean floor
in a normal fault , the hanging wall slips down relative to the? footwall
_______ has rocks on either side that slip past each other. strike-slip fault
in a reverse fault , the hanging wall moves up relative to the? footwall
Created by: laurentaylor71