Think About This Part B Lithosphere (crust and uppemost solid mantle) Crust 0-100 km thick Mante Mantle Crust 2300 km Not to Scale Wegener's theory was not widely accepted because he never was able to explain what forces caused the continents to move. Later, scientists developed technologies that enabled them to map the ocean floor and study Earth's interior. Using this information, continental drift was modified to become plate tectonics, Plate tectonics integrates knowledge from many scientific disciplines. Describe some of these. Core Outer Core 5100 lm Solo Inner Core 6378 km To Scale​