SO YOU THINK YOU CAN DANCE PART TWO!

1. SO YOU THINK YOU CAN DANCE PART TWO! TOTALLY CLASS!

2. ALFRED WEGENER • DANCE STEP=THINKING MOTION, POINT TO HEAD • SAY “I WILL CALL IT…CONTINENTAL DRIFT” • NOTES=HE CAME UP WITH THE THEORY OF CONTINENTAL DRIFT BASED ON EVIDENCE COLLECTED FROM SIMILAR FOSSILS, ROCKS, CLIMATE, AND THE CONTINENTS SEEM TO FIT TOGETHER

3. CONTINENTAL DRIFT • DANCE STEP= HUG MOTION, THEN SEPARATE • NOTES= CONTINENTAL DRIFT STATED THAT THE CONTINENTS WERE ONCE TOGETHER INA SINGLE LANDMASS CALLED PANGAEA, THEN BROKE APART, AND HAVE SINCE DRIFTED TO THEIR CURRENT LOCATIONS.

4. PLATES • DANCE STEP= MOVE AROUND FIRST..THEN, FLOATING MOTION IN AIR • NOTES= TECTONIC PLATES ARE PIECES OF THE LITHOSPHERE THAT MOVE AROUND AND FLOAT ON TOP OF THE ASTHENOSPHERE • LIKE A CRACKED EGGSHELL(PIECES SEPARATED BY JAGGED CRACKS)

5. PLATE BOUNDARY • DANCE STEP= DRAW TWO JAGGED PLATES WITH HANDS AND THEN HAVE THEM TOUCH • NOTES= A PLATE BOUNDARY IS A PLACE WHERE TECTONIC PLATES TOUCH

6. CONVERGENT BOUNDARIES • DANCE STEP= HANDS COLLIDE TOGETHER/CRASH • NOTES= A CONVERGENT BOUNDARY IS WHEN TWO TECTONIC PLATES COLLIDE OR COME TOGETHER • CAN FORM MOUNTAINS

7. DIVERGENT BOUNDARIES • DANCE STEP= MOVE AWAY • NOTES= A DIVERGENT BOUNDARY IS WHEN TWO TECTONIC PLATES MOVE AWAY OR SEPARATE FROM EACH OTHER • MID-OCEAN RIDGE EXAMPLE/VOLCANIC ACTIVITY/SEA-FLOOR SPREADING

8. TRANSFORM BOUNDARY • DANCE STEP= SLIDE OR HAVE HANDS SLIP PAST EACH OTHER/RUB AGAINST EACH OTHER AS WELL • NOTES= A TRANSFORM BOUNDARY IS WHEN TWO TECTONIC PLATES SLIDE OR SLIP PAST EACH OTHER. • EARTHQUAKES HAPPEN HERE/SAN ANDREAS FAULT IN CALIFORNIA/RIFT VALLEY FORMS

9. PLATE MOTION-COMPRESSION STRESS • DANCE STEP=SQUEEZE • NOTES-COMPRESSION STRESS=SQUEEZING=CONVERGENT BOUNDARY=REVERSE FAULTS

10. PLATE MOTION-TENSION STRESS • DANCE STEP=STRETCHING • NOTES= TENSION STRESS=STRETCHING= DIVERGENT BOUNDARY=NORMAL FAULTS

11. PLATE MOTION- SHEARING STRESS • DANCE STEP=SLIDING BY/SLIPPING APART/BREAKING OFF AS GOES BY/OPPOSITE DIRECTIONS • NOTES=A STRESS THAT PUSHES A MASS OF ROCK IN TWO OPPOSITE DIRECTIONS IS CALLED SHEARING. CAN CAUSE A ROCK TO BREAK AND SLIP APART OR CHANGE ITS SHAPE • SHEARING=TRANSFORM BOUNDARY=STRIKE-SLIP FAULT

12. SUBDUCTION/OCEANIC CRUST • DANCE STEP=SINKING MOTION/DIVING MOTION • NOTES=SUBDUCTION IS WHEN THE DENSER, OCEANIC CRUST SINKS BENEATH

13. THEORY OF PLATE TECTONICS • DANCE STEP= ROBOT/SLOW MOTION • NOTES= THE THEORY OF PLATE TECTONICS STATES THAT PIECES OF EARTH’S LITHOSPHERE ARE IN CONSTANT, SLOW MOTION, DRIVEN BY CONVECTION CURRENTS IN THE MANTLE

14. MID-OCEAN RIDGE • DANCE STEP= FORM MOUNTAINS, THEN HOLD NOSE AS YOU GO UNDERWATER • NOTES= THE MID-OCEAN RIDGE IS THE LONGEST UNDERWATER MOUNTAIN CHAIN IN THE WORLD AND IS WHERE NEW CRUST IS LOCATED DURING SEA-FLOOR SPREADING

15. CONTINENTAL CRUST • DANCE STEP=MAKE MOUNTAINS AND DRAW AN OUTLINE OF A HOUSE IN THE AIR • NOTES=THE CONTINENTAL CRUST IS THICKER, MADE OF GRANITE, MOUNTAINS ARE HERE AND IT THE CRUST WE LIVE ON

16. YOUNGER AND OLDER CRUST • DANCE STEP=NEW CRUST=CENTER/CLOSER • OLDER CRUST= PUSH TO EDGES • NOTES=YOUNGER CRUST IS FOUND CLOSE TO THE MID-OCEAN RIDGE AND OLDER CRUST GETS PUSHED FAR AWAY FROM THE MID-OCEAN RIDGE TO THE EDGES

17. SEA-FLOOR SPREADING • DANCE STEP=SAY “H,H” THEN PULL AWAY MOTION • NOTES-HARRY HESS, AMERICAN GEOLOGIST IDENTIFIED MID-OCEAN RIDGE AND SEA-FLOOR SPREADING, SEA-FLOOR MOVES APART(DIVERGENT BOUNDARY)