PLASTICLIKE LAYER LAYER OF EARTH ON WHICH THE LITHOSPHERE FLOATS ON

THEROY THAT 200 MILLION YEARS AGO THE CONTINENTS WERE CONNECTED

IN EARTHS MANTLE TRANSFERS HEAT IN INTERIOR AND IS DRIVING FORCE FOR PLATE TECTONICS

RIGID LAYER OF EARTH ABOUT 100 KM THICK MADE UP OF CRUST AND PART OF UPPER MANTLE

ANCIENT LANDMASS THAT COMPOSED ALL CONTINENTS TOGETHER

LARGE SECTION OF EARTH

CRUST AND UPPER MANTLE ARE BEOKEN INTO PLATES

SEAFLOOR SPREADING