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Ch. 6.3 Earthquake
 The
safest place to be during an
earthquake is out in the open away
from tall structures.
 Buildings built on loose rock and soil
suffer more earthquake damage than
those built on solid rock.
 Tsunamis may flood low-lying
shorelines following ocean floor
Earthquake Safety
 Those
living near faults should be
prepared with basic survival supplies.
 If indoors during a quake, get to a
doorway or under a sturdy table.
Stay away from windows or heavy
objects that may tip over.
 Be careful after the quake.
Earthquake Prediction
 Very
inexact. Not reliable.
 Some signs that may signal future
earthquakes include: history of past
earthquakes, animal behavior, slight
ground tilting, changes in earth’s
magnetic field, changes in well
levels, gas seepage from rocks, or
changes in local P-wave speed.
Seismic Gaps
 Areas
along fault zones that have not
experienced earthquakes.
 They are places in faults where the
fault is very firmly locked and unable
to move.
 Since stress continues to build in
these areas, some scientists think
these areas will be the sites of future
major earthquakes.