Question

What are tectonic plates?

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Answer 1

Plate tectonics is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of Earth's lithosphere, since tectonic processes began on Earth between 3.3 and 3.5 billion years ago.

Answer 2

A TECTONIC PLATE IS A MASSIVE, IRREGULARLY SHAPED SLAB OF SOLID ROCK, GENERALLY COMPOSED OF CONTINENTAL AND OCEANIC LITHOSPHERE. BY CONTRAST, OCEANIC CRUST IS COMPOSED OF BASALTIC ROCKS, WHICH ARE MUCH DENSER AND HEAVIER.

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