PIECES OF THE LITHOSPHERE ARE IN SLOW CONSTANT MOTION

THE TRANSFER OF HEAT THROUGH A FLUID

THE PULL OF GRAVITY ON A PLATE THAT IS BEING SUBDUCTION

NEW LESS DENSE CRUST FORMING AND PUSHING OLD CRUST UNDER PLATES

WHEN PLATES MOVE APART FROM EACH OTHER

LANDFORM THAT RESULTS FROM A DIVERGENT PLATE BOUNDARY

UNDERWATER LANDFORM THAT IS CAUSED BY A DIVERGENT PLATE BOUNDARY

TWO TECTONIC PLATES MOVE TOWARD EACH OTHER AND COLLIDE

OCEAN SUBDUCTS UNDER CONTINENTS FROM CONVERGENT BOUNDARY

OCEAN SUBDUCTS UNDER OCEAN FROM CONVERGENT BOUNDARY

TWO CONTIENTAL PLATES COLLIDE

ONE PLATE MOVES UNDER ANOTHER PLATE FROM CONVERGENT BOUNDARY

DEPRESSION IN THE OCEAN BOTTOM DUE TO SUBDUCTION

EXAMPLE OF A DEEP OCEAN TRENCH IS THE PERUVIAN TRENCH

PLATES SLIDE PAST EACH OTHER

HAPPENS FROM A TRANSFORM BOUNDARY

AN EARTHQUAKE IN 1989