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platesandquakes
plate tectonics and earthquake vocab
| Term | Definition |
|---|---|
| STRESS | POWERFUL FORCES THAT SQEEZE OR PULL ON THE CRUST |
| FAULT | A BREAK IN THE CRUSTWHERE SLABS OF CRUST SLIP PAST EACH OTHER |
| PLATES | PIECES THAT THE LITHOSPHERE IS BROKEN INTO FLOAT |
| FOCUS | POINT BENEATH THE SURFACE OF EARTH WHERE AN EARTHQUAKE STARTS |
| PLATE BOUNDARIES | CRACKS BETWEEN THE PLATES OF THE LITHOSPHERE |
| PANGAEA | SUPERCONTINENT THAT EXISTED MILLIONS OF YEARS AGO ON EARTH |
| P WAVES | WAVES THAT COMPRESS AND EXPAND IN THE DIRECTION OF THE WAVE |
| S WAVES | WAVES THAT VIBRATE SIDE TO SIDE ALONG THE WAVE |
| SURFACE WAVES | WHEN WAVES REACH THE EARTH'S SURFACE |
| RICHTER SCALE | RATING OF THE SIZE OF AN EARTHQUAKE GIVEN IN A NUMBER FORM |
| PLATE TECTONICS | THEORY THAT THE CONTINENTS ARE ADRIFT ON THE MANTLE |
| EARTHQUAKE | SHAKING OF THE EARTH CAUSED BY PRESSURE BELOW |
| TENSION | STRESS THAT PULLS APART THE CRUST |
| SHEARING | STRESS THAT PUSH ROCK MASSES BACK AND FORTH. |
| COMPRESSION | STRESS THAT PUSHES 2 PLATES TOGETHER |
| SEISMOGRAPH | INSTRUMENT USED TO MEASURE THE GROUND MOVEMENT DURING EARTHQUAKES |
| MAGNITUDE | THE STRENGTH OF AN EARTHQUAKE |
| EPICENTER | POINT ON EARTH'S SURFACE DIRECTLY ABOVE THE FOCUS. STRONGEST PART OF AN EARTHQUAKE |
| PACIFIC | PLATE THAT INCLUDES PACIFIC OCEAN AND PART OF CALIFORNIA |
| NORTH AMERICAN | PLATE THAT CONTAINS U.S.A., MEXICO , AND CANADA, AND PART OF ATLANTIC OCEAN |
| SOUTH AMERICAN | PLATE THAT INCLUDE SOUTH AND CENTRAL AMERICA AND PART OF ATLANTIC OCEAN |
| AFRICAN | PLATE WITH AFRICA AND PART OF THE ATLANTIC AND INDIAN OCEAN |
| EURASIAN | PLATE THAT CONTAINS EUROPE AND ASIA |
| INDOAUSTRALIAN | PLATE THAT INCLUDES INDIAN OCEAN AND AUSTRALIA |
| ANTARCTIC | PLATE THAT INCLUDES MOST OF THE SOUTH POLE |
| DIVERGENT | PLATE BOUNDARY WHEN 2 PLATES PULL APART |
| CONVERGENT | PLATE BOUNDARY WHEN 2 PLATES COLLIDE TOGETHER |
| TRANSVERSE | PLATE BOUNDARY WHEN 2 PLATES SLIDE BY EACH OTHER. |
| DORMANT | SLEEPING VOLCANO THAT MIGHT ERUPT AGAIN |
| EXTINCT | DEAD VOLCANO THAT PROBABLY WILL NOT ERUPT AGAIN |
| ACTIVE | A LIVE VOLCANO THAT IS ERUPTING OR SHOWS SIGNS OF ERUPTING. |
| SUBDUCTION | CONVERGENT BOUNDARY WHEN ON PLATE GOES UNDER OTHER PLATE |
| SEA FLOOR SPREADING | TYPE OF DIVERGENT BOUNDARY UNDER THE OCEAN |
| MOUNTAIN RANGE | FORMED BY 2 COLLIDING CONVERGENT PLATES |
Created by:
husker2000
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