[DOC] [TLE] What is Plate Tectonics? | Plate Tectonics - Live Science [PAR] Mar 21, 2016 ... Plate tectonics is the theory that Earth's outer shell is divided into ... Wegener 
didn't have an explanation for how continents could move around the ... all 
geologic features as though driven by the relative motion of these tectonic plates.
" ... Fragments of continental crust are much older, with large chunks at... [DOC] [TLE] plate tectonics | geology | Britannica.com [PAR] Theory dealing with the dynamics of Earth 's outer shell, the ... 12-2-2015 ... The 
lithosphere is broken up into about a dozen large plates and several small ones. 
These plates move relative to each other, typically at rates of 5 to 10 cm (2 to 4 
inches) .... The continents have a crust that is broadly granitic in composition and,
... [DOC] [TLE] Plate tectonics - Wikipedia [PAR] Plate tectonics is a scientific theory describing the large-scale motion of 7 large 
plates and the ... The lithosphere, which is the rigid outermost shell of a planet (
the crust and upper ... Tectonic plates are able to move because the Earth's 
lithosphere has greater ... These boundaries are discussed in further detail below
. [DOC] [TLE] plate tectonics facts, information, pictures | Encyclopedia.com ... [PAR] The earth beneath our feet is not dead; it is constantly moving, driven by forces 
deep in ... Under the effects of these stresses, rocks may bend, warp, slide, or 
break. .... Plate tectonics theory brings together aspects of continental drift, 
seafloor ... Subsequent geologic research has indicated that there may be as 
many as nine... [DOC] [TLE] Plate Tectonics - Crystalinks [PAR] Plate tectonics is a theory of geology that has been developed to explain the 
observed ... The outermost part of the Earth's interior is made up of two layers: 
above is the ... These plates (and the more numerous minor plates) move in 
relation to one ... plate boundaries (most notably around the so-called Pacific 
Ring of Fire). [DOC] [TLE] Plate Tectonics, Tectonic Plates Information, Facts, News, Photos ... [PAR] The plates make up Earth's outer shell, called the lithosphere. ... of the plates 
creates three types of tectonic boundaries: convergent, where plates move into 
one... [DOC] [TLE] Earth's Continental Plates - ZoomSchool.com [PAR] The Earth's surface is divided into huge, thick plates that drift atop the soft mantle. 
... The Earth's rocky outer crust solidified billions of years ago, soon after the 
Earth ... The theory of plate tectonics (meaning "plate structure") was developed 
in ... The plates are moving at a speed that has been estimated at 1 to 10 cm per 
year. [DOC] [TLE] Major Plates of the Lithosphere: Earth's Tectonic Plates - Video ... [PAR] The outer shell of the earth, the lithosphere, is broken up into tectonic plates. ... 
Plate tectonics is the theory that earth's crust is broken up into plates. ... These 
large cracks in the earth's surface form plate-like sections of earth's crust ... There 
are seven major tectonic plates that very slowly move around on the surface of 
our... [DOC] [TLE] Plate tectonics - New World Encyclopedia [PAR] May 6, 2015 ... 6.4 Geological paradigm shift ... Plate tectonic theory arose out of the hypothesis 
of continental drift proposed ... The first evidence that crust plates did move 
around came with the ... The division of the outer parts of the Earth's interior into 
lithosphere ... These boundaries are discussed in further detail below. [DOC] [TLE] Earth Structure, Materials, Systems, & Cycles - Tulane University [PAR] Aug 31, 2016 ... The Earth has a radius of about 6371 km, although it is about 22 km ... up the 
Earth, the processes that act on these materials, and the energy that controls the 
processes. ..... to explain how the outer layers of the Earth move and deform. ... 
Since the development of the plate tectonics theory, geologists have... [DOC] [TLE] BBC Earth - Plate tectonics explained many geology puzzles [PAR] Plate tectonics is an important theory developed in the 1960s to

Question: In geologic theory, the Earth's outer shell has about 12 big these, moving around tectonically
Answer: plates