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plate tectonics
NOUN [GEOLOGY.]
1.
a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past adjacent plates.
Source: Dictionary.com
Plate tectonics - Wikipedia
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 ... More »
plate tectonics | Define plate tectonics at Dictionary.com
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Plate tectonics definition, a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic ...

www.merriam-webster.com/dictionary/plate%20tectonics

Define plate tectonics: geology : a scientific theory that the Earth's surface is made of very large sections that move very slowly; also : the…

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

Mar 21, 2016 ... Plate tectonics is the theory that Earth's outer shell is divided into several ... "We could guess that means plate tectonics was operating, but it ...

www.msnucleus.org/membership/html/jh/earth/dictionary/patedictionary.html

A Aa - Aa (pronounced "ah-ah" - a Hawaiian term), is lava that has a rough, jagged, spiny, and generally clinkery surface. In thick aa flows, the rubbly surface of ...

www.thefreedictionary.com/plate+tectonics

(used with a sing. verb) A theory that explains the global distribution of geological phenomena such as seismicity, volcanism, continental drift, and mountain ...

dictionary.cambridge.org/us/dictionary/english/plate-tectonics

plate tectonics definition, meaning, what is plate tectonics: the study of how the surface of the earth is formed, how the separate pieces of it move…. Learn more.

www.britannica.com/science/plate-tectonics

Apr 18, 2017 ... Plate tectonics, theory dealing with the dynamics of Earth's outer shell, the .... the mantle and the core is also clearly defined by seismic studies, ...