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Plate tectonics

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The Continental Drift Theory, The Seafloor Spreading Theory and The Plate Tectonics Theory are the three important theories taking place in our planet.

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  • Geromae Anne P. Tuzon BS PSY-1 Self-correction only becomes an issue when science gets something wrong. Unfortunately, correction in psychology is often so slow it is hard to detect its very occurrence. (Thus my comparison to plate tectonics—the Earth's continents move unbelievably slowly, undetectable to the naked eye, but move they do, sometimes leading to things such as earthquakes).
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  • SALAO, CARMEN FATIMA P. BSA - I Plate tectonics is the process of continents on the Earth drifting and colliding, rock grinding and scraping, mountain ranges being formed, and earthquakes tearing land apart. It makes our world dynamic and ever-changing. As an accounting student, knowing these facts about Plate Tectonics is important because these are essential for life and also economic resource distribution can be correlated with plate motion history, and thus plate tectonics is part of resource exploration models.
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  • Reymart Kyle D. Dabbay BS PSY 1 The Continental Drift Theory According to Alfred Wegener had once been joined together forming a single supercontinent landmass called Pangaea that divided into individual continents as they are now. The Seafloor Spreading Theory This theory states that the oceanfloor are spreading outward from vast underwater ridges. This was proposed by an American geologist named Harry H. Hess in early 1960’s.
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Plate tectonics

  1. 1. By Prof. Liwayway Memije-Cruz Plate Tectonics
  2. 2. The Continental Drift Theory According to Alfred Wegener had once been joined together forming a single supercontinent landmass called Pangaea that divided into individual continents as they are now.
  3. 3. The Seafloor Spreading Theory This theory states that the oceanfloor are spreading outward from vast underwater ridges. This was proposed by an American geologist named Harry H. Hess in early 1960’s.
  4. 4. Seafloor Spreading
  5. 5. What is Plate Tectonics Theory? Plate tectonics is the theory that the outer rigid layer of the earth (the lithosphere) is divided into a couple of dozen "plates" that move around across the earth's surface relative to each other, like slabs of ice on a lake.
  6. 6. TYPES OF PLATE BOUNDARY Divergent boundary or divergent plate boundary (also known as a constructive boundary or an extensional boundary) is a linear feature that exists between two tectonic plates that are moving away from each other.
  7. 7. Convergent boundary, also known as a destructive plate boundary (because of subduction), is an actively deforming region where two (or more) tectonic plates or fragments of the lithosphere move toward one another and collide.
  8. 8. Transform boundary (or conservative boundary) is where two of the tectonic plates slide alongside each other. When this happens, the scraping of the two plates causes earthquakes. And since these faults neither create nor destroy lithosphere, is a type of fault whose relative motion is predominantly horizontal in either sinistral or dextral direction.
  9. 9. Transform boundary (or conservative boundary) is where two of the tectonic plates slide alongside each other. When this happens, the scraping of the two plates causes earthquakes. And since these faults neither create nor destroy lithosphere, is a type of fault whose relative motion is predominantly horizontal in either sinistral or dextral direction.

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