Describe the general sequence of events in continental drift since the time of 5 separate continents 450 million years ago. What is the difference between the older continental drift theory by Wegener and the more recent plate tectonic theory? Plate tectonics theory explains many seemingly unrelated phenomena. Explain how the patterns of volcanoes and earthquakes related to plate tectonics. Explain several pieces of evidence that combine to make the theory of plate tectonics the one that is generally accepted.