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According to About.com, plate tectonics is the scientific theory that attempts to explain the movement of the Earth's lithosphere, which has formed the landscape features seen across the globe. It provides geology with a... More »

www.reference.com Science Earth Science Plate Tectonics

The plate tectonics theory suggests that the outer shell of the Earth's surface is split into a few plates that move along the mantle, forming a hard shell, with pressure from mid-ocean ridges and subduction zones causin... More »

www.reference.com Science Earth Science Plate Tectonics

There are seven major tectonic plates on the planet that are further subdivided into dozens of smaller plates. Geologists do not always agree on how to subdivide the minor plates. Each plate is in motion relative to the ... More »

www.reference.com Science Earth Science Plate Tectonics
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The theory of plate tectonics, formerly known as continental drift, is a working model that describes the movement of the continents and sea floor across the surface of the Earth. The theory explains many anomalous facts... More »

www.reference.com Science Earth Science Plate Tectonics

Andrew Alden of About explains that Australian geologist Sam Carey's theory of Earth expansion, the idea that the continents fit together properly only on a formerly smaller Earth, once rivaled the theory of plate tecton... More »

www.reference.com Science Earth Science Plate Tectonics

Researcher Alfred Wegener developed the continental drift theory that led to the modern theory of plate tectonics. Because plate tectonics is still a theory, it is hypothesized and not officially discovered or proven. More »

www.reference.com Science Earth Science Plate Tectonics

Plate tectonics is the theory that explains the structure, composition and internal workings of the Earth on a worldwide scale, while continental drift refers to the theory that the continents all used to be connected in... More »

www.reference.com Science Earth Science Plate Tectonics