Composed of either continental or continental and oceanic lithosphere significantly more plastic than the rigid asthenosphere atop which they float.
Plate tectonics and the ocean floor quizlet.
The ocean floor had tracks from the continents.
9th 12th grade.
A mid ocean ridge or mid oceanic ridge is an underwater mountain range formed by plate tectonics.
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The concept of plate tectonics was formulated in the 1960s.
Plate tectonics from the late latin.
Plate tectonics and the ocean floor.
According to the theory earth has a rigid outer layer known as the lithosphere which is typically about 100 km 60 miles thick and overlies a plastic moldable partially molten layer called the asthenosphere the lithosphere is broken up into seven very large continental and ocean sized plates six or seven medium sized regional.
Tectonicus from the ancient greek.
Earth s magnetic field.
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Nobody had known how deep the oceans were.
All this evidence both from the ocean floor and from the continental margins made it clear around 1965 that continental drift was feasible and the theory of plate tectonics which was defined in a series of papers between 1965 and 1967 was born with all its extraordinary explanatory and predictive power.
According to the theory of plate tectonics the plates are moved by the creation of new crust and the subduction of old crust.
Ocean trenches form where a plate with a leading edge of oceanic lithosphere collides with another plate.
The process by which the ocean floor sinks beneath a deep ocean trench and back into the mantle is known as answer choices.
Linked pieces of lithosphere which float atop the asthenosphere.
Pertaining to building is a scientific theory describing the large scale motion of seven large plates and the movements of a larger number of smaller plates of earth s lithosphere since tectonic processes began on earth between 3 3 and 3 5 billion years ago.
In these situations an oceanic plate normally subducts into the mantle forming a topographic low on the ocean floor.
This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the.
Most plate boundaries are under the ocean.
