DRRR LESSON ? Flashcards
tectonic belt of volcanoes and earthquakes
PACIFIC RING OF FIRE
PERTAINS TO ANY SHAKING OF THE GROUND SURFACE. THE SHAKING IS OTHERWISE CALLED AS “_”
EARTHQUAKE
SEISMIC WAVE
CAUSED BY THE MOVEMENT OF THE MANTLE AS A LIQUID PHASE OF THE EARTH’S INTERIOR
EARTHQUAKE
ANOTHER CAUSE IS THE DIFFERENCE IN TEMPERATURE IN THE DIFFERENT LAYERS OF THE EARTH.
EARTHQUAKE
A MACHINE THAT RECORDS GROUND MOVEMENT FROM EARTHQUAKES.
SEISMOGRAPH
THE INFORMATION RECORDED TELLS US ABOUT THE STRENGTH AND SPEED OF THE ENERGY TRAVELING FROM THE BREAKING POINT UNDERGROUND
SEISMOGRAPH
THE POINT UNDERGROUND WHERE THE ACTUAL BREAKING OF THE ROCK OCCURS. THE “FOCAL POINT” OF THE EARTHQUAKE
FOCUS
THE POINT DIRECTLY ABOVE THE FOCUS. THIS IS WHERE THE GROUND SHAKING IS USUALLY THE STRONGEST. THIS IS ALSO WHERE THE MOST DAMAGE USUALLY OCCURS.
EPICENTER
IT MAY LAST FROM SECONDS TO MINUTES DEPENDING ON THE PROXIMITY TO THE EPICENTER, OR THE SOURCE OF EARTHQUAKE. THIS IS A VIBRATION OF THE EARTH’S SURFACE SIDEWAYS, UPWARDS OR DOWNWARD.
GROUND SHAKING
AN OPPOSITE DIRECTIONAL MOVEMENT OF THE GROUND. THIS OFTEN OCCURS ON A FAULT, OR IN BETWEEN TWO BLOCKS OF LAND.
GROUND RUPTURE
REFERS TO THE WEAKENING OF SEDIMENTS, ROCKS, OR SOIL DUE TO SATURATION OF WATER CAUSED BY STRONG SHAKING OF THE GROUND.
LIQUEFACTION
OCCURS WHEN WATERLOGGED SEDIMENTS ARE AGITATED BY SEISMIC SHAKING.
LIQUEFACTION
PRONE TO LOW LYING AREAS, RIVER BANKS, FLOOD PLAINS, COASTLINES, SWAMPS AND ABANDONED RIVERS.
LIQUEFACTION
EFFECTS OF LIQUEFACTION
LATERAL SPREADING
BOUYANT RISE OF BURIED VESSEL
GROUND-SETTING
SAND BOIL OR SAND BLOW
Subsidence, or lowering of the ground surface, often occurs during earthquakes
EARTHQUAKE INDUCED GROUND SUBSIDENCE
