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Plate Tectonics Mr. Skirbst Earth Science Topic 26.

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Presentation on theme: "Plate Tectonics Mr. Skirbst Earth Science Topic 26."— Presentation transcript:

1 Plate Tectonics Mr. Skirbst Earth Science Topic 26

2 Plate Tectonics (lithospheric) plates

3 Plate Tectonics (lithospheric) plates (rock) slabs

4 Plate Tectonics (lithospheric) plates (rock) slabs tectonics

5 Plate Tectonics (lithospheric) plates (rock) slabs tectonics movement

6 Plate Tectonics movement of rocky slabs across the Earth

7 Plate Tectonics theory of continental drift Alfred Wegener

8 Plate Tectonics Earth’s continents are “floating” from one place to another

9 Plate Tectonics Evidence from fossils Glossopteris (found in S. Hemisphere)

10 Plate Tectonics Evidence from rocks mountains, shapes, deposits

11 Plate Tectonics Evidence from sea-floor sea-floor spreading mid-ocean ridge

12 Plate Tectonics

13 Plate Boundaries Divergent boundary

14 Plate Boundaries Divergent boundary plates move apart

15 Plate Boundaries Divergent boundary plates move apart found along mid-ocean ridges

16 Plate Boundaries Divergent boundary plates move apart found along mid-ocean ridges called constructive boundary

17 Plate Boundaries Divergent boundary

18 Plate Boundaries Convergent boundary

19 Plate Boundaries Convergent boundary plates come together

20 Plate Boundaries Convergent boundary plates come together found near trenches

21 Plate Boundaries Convergent boundary plates come together found near trenches called destructive boundaries

22 Plate Boundaries Strike-slip boundary

23 Plate Boundaries Strike-slip boundary grind horizontally

24 Plate Boundaries Strike-slip boundary grind horizontally forms lateral faults

25 Plate Boundaries Strike-slip boundary grind horizontally forms lateral faults called a conservative boundary

26 Pangaea

27 Large, single landmass that existed in the past before slowly breaking apart and moving into the current position

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