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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?