Tectonic plates
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Pieces of lithosphere that move around on the top of the athenosphere are Tectonic Plates. The lithosphere is like a big jigsaw puzzle, and the tecontic plates are like pieces of a jigsaw puzzle. All of the tectonic plates are the same. Tectonic plates diifer in other ways, too. An example is the South American plate has an entire continent on it and has oceanic crust, but Cocos plate has only oceanic crust. Some tectonic plates include both continental and oceanic crust. Tectonic plates float on the astenosphere, and they touch each other and move around. Thick tectonic plates, such as those made of contineta crust, displace more asthenosphere tahn do thin plates, such as those made oceanic lithosphere. The pacific is the largest Tectonic plate.