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= = = = = = The Earth as we see it today was not always like it is now. Land masses have pulled apart and joined together by the process we call Plate Tectonics…. There are 12 major plates on Earth, each of which slide around at a rate of centimetres per year, pulling away from, scraping against or crashing into each other. View and take notes on the provided PowerPoint about Plate Tectonics and their relation to earthquakes and volcanoes.  Click here After viewing the PowerPoint on Plate Tectonics, continue the lesson by completing the webquest activities located on the right.
 * __EARTHS PLATES __**  **__AND __**   **__ITS BOUNDARIES __**