[DOC] [TLE] Plate Tectonic Theory: Plates and Interplate Relationships [PAR] 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 ... 
Within the asthenosphere are convection cells, slowly turning over hot, plastic 
rock. ... It is this turning over of the convection cells the drives the plate 
movements. [DOC] [TLE] Plate Tectonics: Earth's Plates and Continental ... - Milan Area Schools [PAR] What is the theory of plate tectonics and how does it work? ... But did YOU know 
that the continents and oceans are moving across the surface of the planet? [DOC] [TLE] plate tectonics facts, information, pictures | Encyclopedia.com ... [PAR] Of principal concern in the theory of plate tectonics, as we shall see, ... version of 
continental drift, a theory concerning the movement of Earth's continents. ... that 
Greenland was drifting slowly away from Europe, yet his theory met with ...... 
paleomagnetism) showed that all continents had moved across the earth over 
time. [DOC] [TLE] What causes tectonic plates to move? | Reference.com [PAR] The three primary causes for tectonic plate movement are the convection of 
material in ... These forces cause each of the seven major plates and... ... Earth 
Science ... A: Very slow currents in the relatively plastic lower mantle, or 
aesthenosphere, are ... Tectonic Plate Movement  Plate Tectonic Maps  Plate 
Tectonic Theory... [DOC] [TLE] High School Earth Science/Theory of Plate Tectonics - Wikibooks ... [PAR] Describe how plate tectonics processes lead to changes in Earth's surface 
features. ... moving on one side of the rectangle, one limb moving horizontally 
across the top ... Magma cools more slowly beneath the lava mostly forming the 
igneous... [DOC] [TLE] How do plates move? - The Geological Society [PAR] This very slow motion in the solid state transfers stresses to the lithosphere, just ... 
As the theory of plate tectonics developed, mantle convection was long thought to 
be responsible for the movement of tectonic plates across the Earth's surface. [DOC] [TLE] Plate Tectonics - examples, body, process, Earth, type, form, energy ... [PAR] Plate tectonics is the geologic theory that Earth's crust is made up of rigid plates 
.... as the two or more blocks of continental crust begin slowly moving apart and... [DOC] [TLE] All About Plate Tectonics: Earth's Plates and Continental Drift [PAR] What is the theory of plate tectonics and how does it work? ... But did YOU know 
that the continents and oceans are moving across the surface of the planet? ... 
Most of these changes in the earth's surface takes place so slowly that they are 
not... [DOC] [TLE] Plate Tectonics - Crystalinks [PAR] Plate tectonic theory arose out of two separate geological observations: ..... a 
massive upwelling of molten rock slowly splitting the African tectonic plate in two. 
..... the workings of stretching plates, the rock crust moving across Earth's surface 
at... [DOC] [TLE] plate tectonics | geology | Britannica.com [PAR] Dec 2, 2015 ... Plate tectonics, theory dealing with the dynamics of Earth's outer ... Plate 
movement is possible because the lithosphere-asthenosphere boundary is a 
zone of detachment. As the lithospheric plates move across Earth's surface, 
driven by ... slow down, bend, or even stop if they cannot penetrate the material... [DOC] [TLE] Plate Tectonics - Tulane University [PAR] Aug 26, 2015 ... Plate Tectonics is a theory developed in the late 1960s, to explain how the outer 
layers ... In 1950s and 1960s, studies of the Earth's magnetic field and how it 
varied .... the ridge stands at higher elevations than for slow spreading centers. ... 
When a plate of dense oceanic lithosphere moving in one direction... [DOC] [TLE] Plate Tectonics: How Do Plates Move? - Windows to the Universe [PAR] Scientists once thought that Earth's plates just surfed on top of the mantle's giant 
convection cells, ... long amounts of time is the movement of Earth's outer layer by 
the process of plate tectonics. ... Lava flows tend to cool quickly and flow slowly. [DOC] [TLE] Chapter 1

Question: The theory of the slow tectonic movement of plates across the Earth
Answer: continental drift