They move at a rate of one to two inches three to five centimeters per year convergent boundaries where plates serving landmasses collide the crust crumples and buckles into mountain ranges . Plate tectonics is the theory that earths outer shell is divided into several plates that glide over the mantle it is moving northwest at a speed of around 275 inches 7 cm per year. Earths surface appears to be still but it is actually constantly on the move its outer shell is made up of huge slabs of moving rock called tectonic plates the plates fit together like puzzle pieces to make up earths surface their movements change the planets features depending on how the plates meet. The tectonic plates are moving kindle edition by roy livermore download it once and read it on your kindle device pc phones or tablets use features like bookmarks note taking and highlighting while reading the tectonic plates are moving
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