Plate Tectonics And The Ocean Floor Quizlet

In these situations an oceanic plate normally subducts into the mantle forming a topographic low on the ocean floor.

Plate tectonics and the ocean floor quizlet. Ocean trenches form where a plate with a leading edge of oceanic lithosphere collides with another plate. 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. Linked pieces of lithosphere which float atop the asthenosphere. Start studying oceanography chapter 2.

Nobody had known how deep the oceans were. Tectonicus from the ancient greek. 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. The ocean floor had tracks from the continents.

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. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the. A mid ocean ridge or mid oceanic ridge is an underwater mountain range formed by plate tectonics. The features mapped on the ocean floor disproved continental drift.

Learn vocabulary terms and more with flashcards games and other study tools. 9th 12th grade. Most plate boundaries are under the ocean. Composed of either continental or continental and oceanic lithosphere significantly more plastic than the rigid asthenosphere atop which they float.

The concept of plate tectonics was formulated in the 1960s. Earth s magnetic field. Marianas trench flashcards quizlet of the earth all it science plate tectonics earth s marine bio ch3 geology of the ocean ocean floor diagram quizlet plate tectonics diagram quizletgeog 2050 chapter 10 exam 2 diagram quizlettrenches mrs roach s cl explores our dynamic earth flashcards quizletchapter 6 10 practice review ions test diagram quizletplate boundaries. Why was the mapping of the ocean floor such an important step in the development of plate tectonic theory.

Plate tectonics from the late latin.