What is the theory of the movement of the lithosphere?

What is the theory of the movement of the lithosphere?

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. Thus, at divergent boundaries, oceanic crust is created.

What theory states that the lithosphere is divided into slabs of rocks?

Plate tectonics
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.

What are the three theories on the movement of the lithosphere?

Plates of lithosphere move because of convection currents in the mantle. One type of motion is produced by seafloor spreading. Plate boundaries can be located by outlining earthquake epicenters. Plates interact at three types of plate boundaries: divergent, convergent and transform.

What is the theory behind why tectonic plates move?

The convection currents move the plates. Where convection currents converge, plates move towards each other, plates converge and the plates move together, also known as ridge push. The movement of the plates, and the activity inside the Earth, is described as the theory of plate tectonics.

What are the evidence of plate tectonic theory?

Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together. Fossils tell us when and where plants and animals once existed. Some life “rode” on diverging plates, became isolated, and evolved into new species.

Which is theory states the Earths lithosphere is dived into?

The theory that the Earth’s lithosphere is divided into tectonic plates that move around on top of the asthenosphere. PLATE MOTION is affected by: Heat and gravity. The correct answer would be Plate Tectonics.

Which is correct according to the theory of plate tectonics?

D. asthenosphere is strong and rigid. . Answering the question, according to the theory of plate tectonics, the lithosphere is divided into plates. This implies the correct answer is B. The lithosphere, the outer shell of the earth is composed of nine major different plates.

How is the asthenosphere related to plate tectonics?

According to the theory of plate tectonics, the__. A. asthenosphere is divided into plates. . . B. lithosphere is divided into plates. . . C. asthenosphere moves over the lithosphere. . . D. asthenosphere is strong and rigid. .

How are the lithospheric plates related to each other?

The lithospheric plates and their names. The arrows show whether the plates are moving apart, moving together, or sliding past each other. Movement of the plates over Earth’s surface is termed plate tectonics. Plates move at a rate of a few centimeters a year, about the same rate fingernails grow. Figure 3.