Have you ever wondered what is below all of 

this water that covers Earth? I have. Let's 

dive down to explore the layers below the 

water.

Crust, Outer Mantle, Inner Mantle, Core. Some say it like this: Crust, Mantle, Outer Core, Inner Core. Either way, there are 4 main layers of the Earth.

There's also convection currents. a current in a fluid that results from convection.Convection currents in Earth's mantle are caused by the rise of hot material rising towards the crust, becoming cooler and sinking back down. This process occurs repeatedly, causing the currents to constantly flow. The movement of the currents plays a factor in the movement of the mantle.

The continental drift was the gradual movement of the continents across the earth's surface through geological time.The first criteria is that the continents have similar shapes that coordinate with each other. For example, Africa and South America fit into each other, when rotated. The next proof is that there were fossils of the same type of dinosaur on adjacent continents. (South America and Africa)The third proof is that there are mountain ranges of similar build on opposite continents The last proof is old traces of ice that all coordinate with Antarctic ice, proving the situation that the continents were once in. Because Wegener could not identify the cause of continental drift, most geologists rejected his idea.

Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.  eruptions of molten material, magnetic stripes in the rock of the ocean floor, and the ages of the rocks themselves. This evidence led scientists to look again at Wegener's hypothesis of continental drift.

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.

Stress is the force applied to a rock, which may cause deformation. The three main types of stress go along with the three types of plate boundaries: compression is common at convergent boundaries, tension at divergent boundaries, and shear at transform boundaries.