Plate Tectonics: Birth Of A Theory

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Based on the information in the textbook and the instructor note, plate tectonics is the Earth’s surface divided into several plates that move slowly and change in size. I found the video Plate Tectonics: “Birth of a Theory” in session 13 very useful. It helps me understand the material easily by using the animation to illustrate the process of plate tectonics. It is amazing about the fact that the continents can be made to fit together like pieces of a picture puzzle. About 225 million years ago, the Earth seemed to contain only one piece of continent. However, as time goes by, the plate boundaries have happened. The plates that move away from one another are called divergent plate boundaries. The plates that move toward each other are called
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