Models are important in science. Some models are verbel models, which are full elaborate descriptions that can help someone visualize the concept. You have seen various visuals of earths layers. Create a verbal model of earths interior. In your model, describe the following: The main layers of earths interior and the inderecct evidence that helped us determine the layers. The flow of matter in the mantle and in the core and the effects of that flow. The source of thermal energy and how energy flows through the layers.