https://sciencing.com/definition-tectonic-activity-8336422.html

The Definition of Tectonic Activity. By Scott Johnson; Updated April 25, 2017. The Himalaya Mountains were formed by the collision of continental plates.

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

Plate tectonics definition is - a theory in geology: the lithosphere of the earth is ... and much of the earth's seismic activity occurs at the boundaries of these plates.

https://earthquake.usgs.gov/learn/glossary/?term=plate%20tectonics

Plate Tectonics is the theory supported by a wide range of evidence that considers ... of several large, thin, relatively rigid plates that move relative to one another. Slip on faults that define the plate boundaries commonly results in earthquakes.

https://www.bbc.com/bitesize/guides/ztprqty/revision/1

Learn about and revise tectonic activity with GCSE Bitesize Geography (Edexcel) .

https://en.wikipedia.org/wiki/Plate_tectonics

Plate tectonics is a scientific theory describing the large-scale motion of seven large plates and the ...

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

Dec 19, 2017 ... Plate tectonics is the theory that Earth's outer shell is divided into several plates ... The plates act like a hard and rigid shell compared to Earth's mantle. ... "We could guess that means plate tectonics was operating, but it might ...

https://www.britannica.com/science/tectonics

Tectonics: Tectonics, scientific study of the deformation of the rocks that make up the Earth's crust and the forces that produce such deformation. It deals with the ...

https://www.vocabulary.com/dictionary/tectonic

Tectonic plates are the large sections of the earth's surface that shift. If you live in a part of the world that sits on the edge of a tectonic plate, like the San Andreas ...

https://www.britannica.com/science/plate-tectonics

Apr 17, 2019 ... Together, these plates constitute the lithosphere, from the Greek lithos, meaning “ rock.” The lithosphere rests on and slides over an underlying ...

https://www.youtube.com/watch?v=8U4BajSzAFU

Oct 29, 2015 ... The Earth is divided into an inner core, made mostly of iron, and an outer part, made largely of silicates. The outer part is further divided in the ...