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For tectonic plates to stop moving, the Earth’s mantle will have to be too cold for convection to occur. If that were to happen, then it means the Earth’s outer core has likely solidified. On one hand, if heat can’t reach the mantle or Earth’s crust, then the whole planet might freeze.
One big problem with plate tectonics stopping is that plate motion is the mechanism by which Earth is cooling down and getting rid of its internal heat. If the plates stopped moving, the planet would have to find a new and efficient means to blow off this heat.
Over millions of years, continents drift across Earth’s surface, going from one climate zone to another. Without plate tectonics, Earth would not have its diverse geography, which provides a wide range of habitats. Plate tectonics is also responsible for hydrothermal vents on the ocean floor.
If earth’s mountains were magically instantly removed, there would be immediate repercussions. All that stone has mass, and the crust beneath which had been pressed into the mantle would rebound, causing worldwide earthquakes. Volcanoes would erupt as their plugs of stone were removed or weakened.
Plate tectonics, theory dealing with the dynamics of Earth’s outer shell—the lithosphere—that revolutionized Earth sciences by providing a uniform context for understanding mountain-building processes, volcanoes, and earthquakes as well as the evolution of Earth’s surface and reconstructing its past continents and …
Slab pull occurs where older, denser tectonic plates sink into the mantle. As these older sections of plates sink, newer and less dense sections of plate are pulled along behind. Sinking in one place leads to plates spreading apart in other places. Earthquakes and volcanoes are primarily found at plate boundaries .
Pacific Plate
Deep ocean trenches, volcanoes, island arcs, submarine mountain ranges, and fault lines are examples of features that can form along plate tectonic boundaries. Volcanoes are one kind of feature that forms along convergent plate boundaries, where two tectonic plates collide and one moves beneath the other.
Collisions of two plates may create everything from fold mountains to oceanic trenches; divergent plates come marked by mid-ocean ridges.
When two plates carrying continents collide, the continental crust buckles and rocks pile up, creating towering mountain ranges. When an ocean plate collides with another ocean plate or with a plate carrying continents, one plate will bend and slide under the other. This process is called subduction.
When two tectonic plates of different densities collide due to convection currents that are produced by the heat within the asthenosphere, a plate boundary (convergent) is formed. Deep trenches are usually formed where one of the plates slides beneath each other (a process called subduction).
Most mountains formed from Earth’s tectonic plates smashing together. Below the ground, Earth’s crust is made up of multiple tectonic plates. On average, these plates move at a rate of about one to two inches each year. When two tectonic plates come together, their edges can crumple.
When two tectonic plates push into one another, the boundary where they meet is called a convergent boundary. The region where the oceanic plate sinks down into the asthenosphere is called a subduction zone.
What is the most accepted explanation of tectonic movement? Convection currents in the mantle influence crustal movement.
Plates are composed of lithosphere, about 100 km thick, that “float” on the ductile asthenosphere. The plates behave as rigid bodies with some ability to flex, but deformation occurs mainly along the boundaries between plates. The plate boundaries can be identified because they are zones along which earthquakes occur.
Answer: The movement of these tectonic plates is likely caused by convection currents in the molten rock in Earth’s mantle below the crust. Earthquakes and volcanoes are the short-term results of this tectonic movement. The long-term result of plate tectonics is the movement of entire continents over millions of years.