F O R M 2 - 2 0 - T E R M 1

PLATE TECTONICS & PLATE MARGINS

THE EARTH’S STRUCTURE

CONTINENTAL DRIFT

CONTINENTAL DRIFT- EVIDENCE

CONVECTION CURRENTS

HOW DO PLATES MOVE?

HOW DO PLATES MOVE?

PLATE MARGINS/BOUNDARIES

DIVERGENT BOUNDARIES

PILLOW LAVA

MID-ATLANTIC RIDGE

ICELAND (VOLCANIC COUNTRY)

CONVERGENT BOUNDARIES

OCEANIC-CONTINENTAL CONVERGENCE

(SUBDUCTION MARGINS)

OCEANIC-OCEANIC CONVERGENCE

CONTINENTAL-CONTINENTAL CONVERGENCE

(COLLISION MARGIN)

TRANSFORM BOUNDARIES

CONSERVAT IVE BOUNDARIES

A FEW, HOWEVER, OCCUR ON LAND. FOR EXAMPLE, THE SAN ANDREAS FAULT ZONE IN CALIFORNIA IS A TRANSFORM FAULT

THAT CONNECTS THE EAST PACIFIC RISE, A DIVERGENT BOUNDARY TO THE SOUTH, WITH THE SOUTH GORDA -- JUAN DE FUCA -- EXPLORER RIDGE, ANOTHER DIVERGENT BOUNDARY TO THE

NORTH.

THE EARTH’S TECTONIC PLATES

CARIBBEAN PLATE