Plate Tectonics Mr. Skirbst Earth Science Topic 26.
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Transcript of Plate Tectonics Mr. Skirbst Earth Science Topic 26.
Plate Tectonics
Mr. SkirbstEarth Science
Topic 26
Plate Tectonics
(lithospheric) plates
Plate Tectonics
(lithospheric) plates(rock) slabs
Plate Tectonics
(lithospheric) plates(rock) slabstectonics
Plate Tectonics
(lithospheric) plates(rock) slabstectonics
movement
Plate Tectonics
movement of rocky slabsacross the Earth
Plate Tectonics
theory of continental drift
Alfred Wegener
Plate Tectonics
Earth’s continents are “floating” from one place to another
Plate Tectonics
Evidence from fossils
Glossopteris(found in S. Hemisphere)
Plate Tectonics
Evidence from rocks
mountains, shapes, deposits
Plate Tectonics
Evidence from sea-floor
sea-floor spreadingmid-ocean ridge
Plate Tectonics
Plate BoundariesDivergent boundary
Plate BoundariesDivergent boundary
plates move apart
Plate BoundariesDivergent boundary
plates move apartfound along mid-ocean ridges
Plate BoundariesDivergent boundary
plates move apartfound along mid-ocean ridgescalled constructive boundary
Plate BoundariesDivergent boundary
Plate BoundariesConvergent boundary
Plate BoundariesConvergent boundary
plates come together
Plate BoundariesConvergent boundary
plates come togetherfound near trenches
Plate BoundariesConvergent boundary
plates come togetherfound near trenchescalled destructive boundaries
Plate BoundariesStrike-slip boundary
Plate BoundariesStrike-slip boundary
grind horizontally
Plate BoundariesStrike-slip boundary
grind horizontallyforms lateral faults
Plate BoundariesStrike-slip boundary
grind horizontallyforms lateral faultscalled a conservative boundary
Pangaea
PangaeaLarge, single landmass that
existed in the past before slowly breaking apart and moving into the current position