THE THEORY THAT PIECES OF EARTHS LITHOSPHERE ARE IN CONSTANT MOTION.

THE MOVEMENT OF A FLUID, CAUSED BY DIFFERENCES IN TEMPERATURE, THAT TRANSFER HEAT FROM ONE PART TO ANOTHER .

THE PORTION OF MOTION OF A TECTONIC PLATE THAT CAN BE ACCOUNTED FOR BY ITS SUBDUCTION.

A PROPOSED MECHANISM FOR PLATE MOTION IN PLATE TECTONICS.

A PLATE BOUNDARY WHERE TWO PLATES MOVE AWAY FROM EACH OTHER.

DIVERGENT PLATE BOUNDARY CAUSES THIS TO FORM.

TECTONIC PLATES OR FRAGMENTS OF THE LITHOSPHERE MOVE TOWARD ONE ANOTHER AND COLLIDE.

A CHAIN OF VOLCANOES FORMED ABOVE A SUBDUCTING PLATE, POSITIONED IN AN ARC SHAPE AS SEEN FROM ABOVE

OCEANIC TECTONIC PLATES CAUSE THIS.

CAUSES: OCEANS

TWO BOUNDARIES SLIDING BY EACH OTHER.