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6 Sci Plate Tectonic
6th Grade Science Plate Tectonics Vocabulary
| Question | Answer |
|---|---|
| CONTINENTAL DRIFT | HYPOTHESIS THAT THE CONTINENTS HAVE MOVED SLOWLY TO THEIR CURRENT LOCATIONS. |
| PANGAEA | ALL THE CONTINENTS CONNECTED AS ONE LARGE LANDMASS THAT BROKE APART 200 MILLION YEARS AGO |
| MID-OCEAN RIDGE | UNDERWATER MOUNTAIN CHAIN WHERE NEW OCEAN FLOOR FORMS |
| SEAFLOOR SPREADING | MAGMA BELOW EARTH'S CRUST IS FORCED UPWARD TOWARD THE SURFACE, FLOWS SIDEWAYS, CARRYING THE SEAFLOOR AWAY IN BOTH DIRECTIONS, MAKING NEW SEAFLOOR. |
| MAGNETIC REVERSAL | WHEN THE MAGNETIC FORCES IN THE EARTH RUN THE OPPOSITE DIRECTION. |
| CRUST | THINNEST, OUTERMOST LAYER OF THE EARTH |
| MANTLE | LARGEST LAYER OF THE EARTH, BELOW THE CRUST |
| OUTER CORE | LIQUID LAYER OF THE EARTH BELOW THE MANTLE |
| INNER CORE | SOLID, DENSE, CENTER LAYER OF THE EARTH |
| PLATES | SECTIONS OF EARTH'S CRUST AND UPPER MANTLE THAT MOVE AROUND ON THE ASTHENOSPHERE |
| LITHOSPHERE | BOTH OCEANIC AND CONTINENTAL CRUST, AND THE RIGID UPPER MANTLE |
| ASTHENOSPHERE | PLASTIC-LIKE LAYER OF THE EARTH THAT THE LITHOSPHERE MOVES AROUND ON |
| PLATE TECTONICS | THEORY THAT THE EARTH'S CRUST AND UPPER MANTLE ARE BROKEN INTO SECTIONS CALLED PLATES. |
| DIVERGENT BOUNDARY | BOUNDARY BETWEEN TWO PLATES THAT ARE MOVING APART. |
| CONVERGENT BOUNDARY | BOUNDARY BETWEEN TWO PLATES THAT COLLIDE. |
| SUBDUCTION ZONE | AREA WHERE AN OCEANIC PLATE IS PUSHED DOWN INTO THE UPPER MANTLE. |
| TRANSFORM BOUNDARY | BOUNDARY BETWEEN TWO PLATES THAT SLIDE PAST EACH OTHER. |
| CONVECTION CURRENT | CYCLE OF HEAT RISING AND COOL AIR SINKING. |