What are the Earth's layers and how do they change over time? Objective Students will be able to name the parts of the Earth. Students will understand that the Earth is dynamic. Background The Earth, like the life on its surface, is changing all the time. Parts of it are molten and slowly rise, cool, and sink back toward the Earth's core, like soup simmering over a fire. Continents drift around the globe creating the features we think of when we think of geology. But most of the Earth lies unseen between our feet and the other side of the world. The Earth is made up of the crust, the mantle, a Duration: 90 Minutes.