This explains the layers of the earth and the composition of each. Using construction paper have each student model the layers of the earth. The crust is thicker and lighter at the continents and thinner and denser at the ocean floor. The mantle lies below the crust. It is a thick layer of solid rock.
Many scientists believe that the mantle transfers heat from the core to the surface.
The outer core is made of melted iron and nickel. It is much denser than the rock layers above it. The inner core is made of solid iron and nickel. These materials sank to the center of the earth while it was still in a molten form. Use white construction paper for the background and label each circle at the top as it is glued to the background.