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PLATETECTONICS
IN THE ZONE
RECORDING QUAKES DAMAGE
SEISMIC WAVES
THE AREA WHERE SLIPPAGE FIRST
OCCURS ALONG A FAULT
WHAT IS THE FOCUS?
A SERIES OF SMALL
TREMORS FOLLOWING
AN EARTHQUAKE
WHAT IS AN AFTERSHOCK OR MICROQUAKE?
90% OF CONTINENTAL EARTHQUAKES
HAVE THIS KIND OF FOCUSWHICH ALSO CAUSES THE
MOST DAMAGE
WHAT IS A SHALLOW FOCUS?
MOST QUAKES OCCUR NEAR
THESE
WHAT IS A PLATE BOUNDARY?
ACCORDING TO THIS THEORYACCUMULATED STRESS CAUSES ROCK TO DEFORM OR FRACTURE
AND THEN SPRING BACKINTO THEIR ORIGINAL
SHAPE CAUSING AN EARTHQUAKE
WHAT IS THE ELASTIC REBOUND THEORY?
A GROUP OF INTERCONNECTED
FAULTS
WHAT IS A FAULT ZONE?
THIS CIRCULAR AREA INCLUDES THE WEST COASTS OF NORTH & SOUTH AMERICA, EASTERN ASIA, & THE WESTERN PACIFIC ISLANDS
DAILY DOUBLE!!!!
WHAT IS THE PACIFIC RING OF FIRE?
OCEANIC CRUST PULLS AWAYFROM BOTH SIDES OF THIS AREA
WHAT IS A MID-OCEAN RIDGE?
THIS FAULT EXTENDS ALONG MUCHOF THE LENGTH OF CALIFORNIA
WHAT IS THE SAN ANDREAS FAULT?
COMPRESSION, TENSION & SHEARING
WHAT ARE 3 TYPES OFSTRESS FORCES ACTING
ON ROCK?
THIS TOOL RECORDS ENERGYRELEASED BY AN EARTHQUAKE
WHAT IS A SEISMOGRAPH?
THIS IS A SCIENTIST WHO STUDIESEARTHQUAKES
WHAT IS A SEISMOLOGIST?
AT LEAST THREE OF THESE ARE NEEDED TO LOCATE THE
EPICENTER OF AN EARTHQUAKE
HOW MANY SEISMOGRAPH STATIONS ARE NEEDED TO LOCATE THE EPICENTER OF
AN EARTHQUAKE?
THIS KIND OF GRAPHIS USED TO DETERMINE THE
EPICENTER OF ANEARTHQUAKE
WHAT IS A DISTANCE TIME GRAPH?
TO DETERMINE HOW FAR AWAYFROM A SEISMOGRAPH STATION
AN EARTHQUAKE OCCURRED,SCIENTISTS PLOT THE DIFFERENCE
BETWEEN THESE 2 WAVES
WHAT ARE P & S WAVES?
THIS IS AN APPROXIMATEMEASURE OF HOW MUCH
ENERGY THE EARTHQUAKERELEASES
WHAT IS THE MAGNITUDE?
A MAGNITUDE OF 2.5 OR LESS, WHICH CANNOT BE FELT
BY PEOPLE
WHAT IS A MICROQUAKE?
DAILY DOUBLE!!!!!!!!!!
THIS SCALE PROVIDESVALUES FOR THE MAGNITUDE
OF AN EARTHQUAKE
WHAT IS THE RICHTER SCALE?
THESE WAVES
CAUSE THE MOST
DAMAGE
WHAT ARE SURFACE WAVES?
A 7 OR ABOVE ONTHE RICHTER SCALE
WHAT IS A MAJOR EARTHQUAKE?
THESE WAVES ARRIVE FIRST ATA SEISMOGRAPH STATION
WHAT ARE PRIMARY, OR P WAVES?
THESE WAVES CAN ONLY TRAVELTHROUGH THE
LITHOSPHERE, OR ANY SOLID
WHAT ARE SECONDARY WAVES,OR S WAVES?
THESE ARE COMPRESSIONSEISMIC WAVES
WHAT ARE P WAVES?
THESE WAVES ARE THE LAST TO GET
RECORDED AT A SEISMOGRAPHSTATION
WHAT ARE SURFACE WAVES?
SEISMIC WAVES CAN BE GENERATED
THROUGH EARTHQUAKESON THE OCEAN FLOOR
WHICH CAN CAUSE THESE
WHAT IS A TSUNAMI?