What theory do plate tectonics refer to?
The theory of plate tectonics states that the Earth’s solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle.
What is the theory of plate tectonics and when was it established?
Developed from the 1950s to the 1970s, the theory of plate tectonics is the modern update to continental drift, an idea first proposed by scientist Alfred Wegener in 1912 which stated that Earth’s continents had “drifted” across the planet over time.
How is the plate tectonic theory formed?
Plate tectonic theory had its beginnings in 1915 when Alfred Wegener proposed his theory of “continental drift.” Wegener proposed that the continents plowed through crust of ocean basins, which would explain why the outlines of many coastlines (like South America and Africa) look like they fit together like a puzzle.
Who came up with the theory of tectonic plates?
Alfred Wegener
The “Father of Plate Tectonics”, Alfred Wegener proposed “Continental Drift” in 1912, but was ridiculed by fellow scientists.
What is the theory of plate tectonics Brainly?
The theory of plate tectonics states that the Earth’s solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.
What is plate tectonics theory class 9?
Plate tectonics is the theory that Earth’s outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core. The plates act like a hard and rigid shell compared to Earth’s mantle. The earth’s lithosphere is composed of seven or eight major plates and many minor plates.
What was the theory before plate tectonics?
Plate tectonics is the theory that Earth’s land masses are in constant motion. The realization that Earth’s land masses move was first proposed by Alfred Wegener, which he called continental drift. He is shown here at the base camp for Johan Koch’s 1912-1913 Greenland expedition.
When did the theory of plate tectonics begin?
Many scientists think plate tectonics, in one form or another, started about 3 billion years ago, but some think it was more like 1 billion years ago — or less.
What is the basic premise of the theory of plate tectonic?
What is the basic premise of the plate tectonic theory? Plate tectonic theory states that the Earth’s crust is divided into several plates. These plates glide on the slowly moving rock on Earth’s surface. Misconception: I thought that the continents were always the same shape and in the same place.
What is plate tectonics short answer?
Plate tectonics is a scientific theory that explains how major landforms are created as a result of Earth’s subterranean movements. In plate tectonics, Earth’s outermost layer, or lithosphere—made up of the crust and upper mantle—is broken into large rocky plates.
What is the theory of plate tectonics quizlet?
The plate tectonics theory suggested that Earth’s surface is divided into large plates of rigid rock. Each plate moves over Earth’s hot semi-plastic mantle. plate tectonics. The theory of plate tectonics states that Earth’s surface is made of rigid slabs of rock, or plates, that move with respect to each other.
When did we discover tectonic plates?
In 1912 the meteorologist Alfred Wegener described what he called continental drift, an idea that culminated fifty years later in the modern theory of plate tectonics.
What statement best describes the theory of plate tectonics?
Answer: The statement that best describes the theory of plate tectonics is the one that says that sections of Earth’s continents are in slow constant movement. Explanation: Plate tectonics is a geological theory developed to explain the phenomenon of continental drift, that is, the continents of the earth are not invariably positioned on the surface of the earth but move in proportion to each other and constantly forming new combinations.
Which statement best describes the theory of plate tectonics?
The statement that best describes the theory of plate tectonics is the one that says that sections of Earth’s continents are in slow constant movement.
What proved the theory of plate tectonics?
Since the north pole is essentially fixed, except during periods of magnetic reversals, this piece of evidence strongly supports the idea of plate tectonics. Following World War II, even more evidence was uncovered which supports the theory of plate tectonics.
What can the plate tectonic theory best be described as?
Im not sure what you mean but, 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 surface relative to each other, like slabs of ice on a lake. the theory can best be described as earth’s natural process by which its lithospheric plates