Principles of plate tectonics 

Plate tectonics is a scientific theory that explains the movement of the Earth's lithospheric plates and the origin and evolution of geological features such as mountains, ocean basins, and earthquakes. The theory was first proposed in the late 1960s and has since become the dominant model for understanding the Earth's dynamic surface. The following are the key principles of plate tectonics:

1. Lithospheric plates: The Earth's surface is composed of a number of large, rigid plates that float on the underlying, semi-fluid mantle. ____ __________ ________ ______ ___ _________.
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