Wegener’s ideas of continental drift were not accepted for many years because he did not have an explanation about the cause of the movement. Pretend that a friend told you that continental drift could not be possible because it would take far too much force to move tectonic plates. In the space below, write what you would tell your friend. In your response, describe the mechanisms scientists use to explain the movement of tectonic plates and which mechanism many scientists think may explain the great force needed to move plates.