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CH 10 - EARTH SCIENCE THERE WAS ONCE ONE CONTINENT SO WHY DO WE NOW HAVE MANY CONTINENTS? CHANGING OF PLATES & MOVEMENT OF CRUST WHAT KIND OF MOVEMENTS?? MAIN REASON • • STRESS THIS PROCESS IS • SLOW THERE MUST BE • PUSHING & PULLING NAME THAT STRESS • PUSHING & PULLING SIDEWAYS? • SHEARING NAME THAT STRESS • CHANGING OR DESTRUCTION OF AN? • DEFORMATION NAME THAT STRESS • PUSHING OF TWO SIDES TOGETHER? • COMPRESSION NAME THAT STRESS • PULLING APART IN OPPOSITE DIRECTIONS? • TENSION NAME THAT STRESS • BREAKING OF THE OBJECT…(LIKE YOUR LEG)? • FRACTURE FAULT • STRUCTURE FORMED IN AREA OF EARTH THAT IS BREAKING APART FAULTS • THE SIDE OF THE BREAK THAT STAYS IN PLACE? • FOOTWALL FAULTS • THE SIDE OF THE BREAK THAT MOVES? • HANGING WALL NAME THAT FAULT • HANGIING WALL SLIDES DOWN? • NORMAL FAULT NAME THAT FAULT • HANGIING WALL PUSHES UP? • REVERSE FAULT NAME THAT FAULT • WALLS DO NOT MOVE UP OR DOWN… THEY TEAR ACROCC NORTH TO SOUTH? • LATERAL FAULT NAME THAT FAULT • • ________ ______I I_______ • FAULT BLOCK MOUNTAIN NAME THAT FAULT • • ______ _______ I_____I • RIFT VALLEY NAME THAT FAULT • ____ _____ _____ • I_____I I_____I • FOLDING CAUSED BY PRESSURE NAME THAT FAULT • • • • • • ANT. ANT. ANT. ____ _____ _____ I_____I I_____I SYN. SYN. ANTICLINE- TOP SYNCLINE- BOTTOM FAULT OR FOLD? • WHEN HEATED MELT LIKE CRAYONS? • FOLD FAULT OR FOLD? • ROCK IS COOL AND SNAPS? • FAULT FAULT OR FOLD? • ROCK IS BRITTLE? • FAULT FAULT OR FOLD? • QUICK STRESS? • FAULT FAULT OR FOLD? • ELASTIC? • FOLD FAULT OR FOLD? • SLOW PROCESS? • FOLD FAULT OR FOLD? • PRESSURE? • FOLD DOME • UPLIFTED AREA CAUSED BY MAGMA ISOSTASY • BALANCE BETWEEN 2 AREAS • EXISTS BETWEEN THE MANTLE AND THE CRUST ISOSTASY • CRUST MOVES ON LAYER OF MAGMA MOVING SLOWLY LIKE MOLASSES ISOSTASY • EXPERIMENT PAGE 342