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Plate tectonics is the study of how the Earth's plates are driven and shaped by geological forces that keep them in constant motion.
The outermost crust of the Earth is cracked into several large pieces called plates that average 50 miles thick. These plates float on a partially molten mantle beneath.

en.wikipedia.org/wiki/Plate_tectonics

Plate tectonics is a scientific theory describing the large-scale motion of 7 large plates and the movements of a larger number of smaller plates of the Earth's ...

www.livescience.com/37706-what-is-plate-tectonics.html

Mar 21, 2016 ... From the deepest ocean trench to the tallest mountain, plate tectonics explains the features and movement of Earth's surface in the present and ...

www.cotf.edu/ete/modules/msese/earthsysflr/plates1.html

The theory of plate tectonics has done for geology what Charles Darwin's theory of evolution did for biology. It provides geology with a comprehensive theory ...

www.britannica.com/science/plate-tectonics

Apr 18, 2017 ... The concept of plate tectonics was formulated in the 1960s. According to the theory, Earth has a rigid outer layer, known as the lithosphere, ...

www.ucmp.berkeley.edu/geology/tectonics.html

The progress of the earth sciences and the advancement of technologies associated with the understanding of our planet during the 1940's and 50's have led ...

www.nationalgeographic.com/science/earth/the-dynamic-earth/plate-tectonics

Learn about how plates move and their impact on the Earth's surface.

www.brainpop.com/science/earthsystem/platetectonics

How did one continent become seven? Join Tim and Moby on their expedition to explore plate tectonics!

csmres.jmu.edu/geollab/vageol/vahist/plates.html

Plate tectonics is the theory that the outer rigid layer of the earth (the lithosphere) is divided into a couple of dozen "plates" that move around across the earth's ...

www.enchantedlearning.com/subjects/astronomy/planets/earth/Continents.shtml

All About Plate Tectonics: Earth's Plates and Continental Drift. The Earth's rocky outer crust solidified billions of years ago, soon after the Earth formed. This crust  ...