Plate Tectonics is the "World Theory" of geology, as it explains most of the important geologic processes, which were enigmatic before. Some say, it has the same importance for geology as has Darwins' evolution theory for biology. However, in science, especially if it is a descriptive science which tries to explore nature, it is a good idea to be careful and keep in mind the difference between facts and theories. Still, plate tectonics is the most important theory in geology and after half a century of scientific research in this field a very good supported one.

The basic point in plate tectonic is, that earth's surface is broken into seven large and many small moving plates, hence the name. These plates move relative to one another an average of a few Centimeter a year. Three types of movement are recognized at the boundaries between plates: convergent, divergent and transform-fault. This is a rather simple result of the the fact that earth is a sphere with more or less constant diameter. So if two plates move in different direction, they either collide or move away from each other. A special case is when they both move parallel to their boundaray.

The possible topics for Plate Tectonics are:

1.  Continental drift

2.  Seafloor spreading

3.  Theory of Plate tectonics and plate boundaries