How Plate Tectonics Discovered

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In this essay I will be telling you about plate tectonics. In my first paragraph, I will be talking about how plate tectonics were discovered. Plate tectonics is theory that earth’s outer shell divided into severally. The mantle plates that glide over the mantle is the rocky inner layer above the core. The plates act like a hard and rigid shell compared to earth’s mantle.The strong outer layer is called litosphere.
Developed from 1950’s to 1970’s, plate tectonics is the modern version of continental drift .This theory was first proposed by scientist Alfred Wegener in 1912. Plate tectonics is the unifying theory of geology that explains the structure of the earth’s crust.
The earth’s surface is broken into many different sections called plates.
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