The document provides instructions for an activity to label and describe the layers of the Earth - the crust, mantle, outer core, and inner core. Students are asked to draw symbols representing the composition of each layer and answer questions about the properties and materials that make up each of the Earth's layers, including the most abundant element in the crust, the elements that make up most of the mantle, the special feature of the upper mantle, how scientists determined the outer core is liquid, the materials of the inner core, and the phase and forces acting on the inner core.