Have you ever wondered why Earth’s plates move? Earth’s plates move because of plate tectonics, sea floor spreading, and convection currents. Which also includes Alfred Wegener’s theory of continental drift. Want to learn more? Keep reading and you’ll find out why Earth’s plates move.
Sea floor spreading is the idea that new crust is forming at the ridges in the sea floor, spreading apart at the crust on either side of the ridges. From the evidence scientist have gathered, magma grows that makes the ground spread apart. When the magma is out in the ocean, it cools and makes new crust. From there, the process repeats and the old rocks move farther away from each other. That is why sea floor spreading is one of the biggest items that move the Earth’s plates.
Plate tectonics is the idea that Earth’s surface is broken into plates that slide slowly across the mantle. The movement of the plates explains the movement of the Earth’s crust. Earthquakes are caused when plates collide on top of the mantle. Every year the continents spread apart one centimeter. This movement explains continental drift. The plate’s move when hot, melted rock from deep in the mantle rise upward and squeezes between the edges of two plates. When the melted rock touches the plates they cool, harden and become part of a plate. The melted rock continues to flow up, pushing the plates farther apart. All of the continents have plates.
Convection currents are the very hot material in the deepest part of the mantle rising, then cooling, sinking again and the heating and it repeats over and over. The mantle’s rocks are solid. The movement of convection currents causes the crust to break in to pieces.
As you can see, there are three major parts in plates moving, sea floor spreading, plate tectonics, and convection currents. They each have a special role to play in the moving of the Earth’s plates.