The Early Earth and Plate Tectonics

Here is just a little description of what you will see in this video.
At the beginning this movie will tell you about inner earth and what are all the layers and what they are all made of. Then, they tell you what people think the earth tectonic plates started, but they are not sure if that is right. They also say why and what is moving them. Thus is a little description of the video, I hope you enjoy.