The document discusses the theory of plate tectonics, including what plates are made of, how they move at boundaries, and the evidence that supports plate tectonics. The lithosphere comprises the crust and rigid upper mantle, floating on the asthenosphere. Plates move at boundaries in three types - divergent, convergent, and transform - which are associated with volcanoes, earthquakes, and other surface phenomena. Evidence like matching continents, widespread fossil distributions, and matching rock formations support plate tectonics and the past connection of continents.

2. Areas of Interest Plate Tectonics Plate Boundaries Causes of Plate Tectonics Evidences Earth Tectonic Plates

3. Plate Tectonics

6. Mid-Atlantic Ridge moves as fast as fingernails grow

7. Continental Drift Theory

9. Super-Continent PANGAEA

10. Sea-Floor Spreading

11. Atlantic 65 m.y. ago

12. Present Day Atlantic

13. Continental Drift + Sea Floor Spreading = Plate Tectonics

16. The Earth’s Plates

18. Plate Boundaries and Earthquakes

20. Transverse bounaries occur where the plates slide laterally past one another The San Andreas Fault in California is one example. Other examples of transform faults include the Alpine Fault in New Zealand and the North Anatolian Fault in Turkey .Volcanoes are rare but earthquakes are common. 1. Transform boundaries

22. San Andreas Fault, CA

25. Bridge across the Álfagjá rift on the Reykjanes peninsula in southwest Iceland , the boundary of the Eurasian and North American continental tectonic plates.

38. What Drives the plates?

39. The Plate Tectonics Model

40. The Plate Tectonics Model

43. South America Africa Coast Line Fit:

44. Fit of Continents Across the Atlantic

47. Ancient Fossils: Plants and Dinosaurs

49. C. Climatic Clue :Ancient Glaciations

50. Present Glaciations

52. Rocks Clues :Ancient Mountains

53. Present Mountains

54. EARTH TECTONIC PLATE

58. Activity # 01

65. Causes of Plate Tectonics

68. Andes Mountains, South America

69. How Plates Move

70. Aleutian Islands, Alaska

72. Benioff’s Interpretation Updated

73. Where Does Ocean Crust Go? Hugo Benioff, 1954

74. Where the Plates Meet

75. Hot Spots: Hawaii