They talk about the theory of plate tectonics. Which they believe that the earth is broken into little plates. They go into depth more than the video.
The article talks about what the continental drift is. It talks about how it works and how much it moves. they talk about how the continental drift is always moving.
This video gives you a brief introduction to plate tectonics. It tell you the layers of the earth. Showing you how the earths plates move.
This video describes how the first theory of continental drift was made. It shows what evidence he used to prove his theory. The narrator describes why each theory worked. There were many different facts that supported his theory. This video isn't long but it gives you an introduction to continental drift.