Gravity holds the atmosphere to the Earth's surface. When layers one by one are removed you can find the periphery of each layer. If the Earth were the size of a basketball, a tightly held pillowcase would represent the thickness of the atmosphere. Relative Sizes of Earth's Layers

Materials: Be Creative! Paste The Earth's Layers title in the top left corner of the paper (or bottom right corner after you have folded and stapled the pages together--see Image). Recycled materials and other ideas are (cloth, paper mache, plastic bottles, etc…) encouraged to reduce cost and get extra credit. The differentiation between these layers is due to processes that took place during the early stages of Earth's formation (ca. Layers of the Earth Model and Story Project Purpose: Make a 3D Model of the layers of the earth and to write a story about these layers.

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4.5 billion years ago). The Earth's atmosphere is an extremely thin sheet of air extending from the surface of the Earth to the edge of space. Paste the Crust on the top of the first blue paper, to the left of center on the page--see Image. The Earth is approximately 4,000 miles (6,400 kilometers) from surface to center. The crust is relatively light and brittle.
Mantle - The mantle is relatively flexible so it flows instead of fracturing.
Outer core– Fluid layer that contains iron. Cross Sectional Model Earth Breaks down into 7 parts for furthe study Different colours for different layers.

Within the atmosphere, very complex chemical, thermodynamic, and fluid dynamics effects occur. Earth has layers that have specific conditions and composition. When upper crust is removed, inner core with layers can be seen.

The Earth’s Layers
Crust - The Earth's outermost surface is called the crust. A single layer, grey-body atmosphere model for the Earth and its atmosphere illustrates the fundamental mechanism for radiative planetary atmospheric warming. The planet Earth was formed about 4.5 billion years ago, after the collapse of the supermassive gaseous body. As time moved on, the Earth cooled down and is still cooling, as of today. Most earthquakes occur within the crust. Make sure this fits by entering your model number. 6. It shows that there are both surface and atmospheric sources of the infrared emissions leaving the planet. The four main layers of the Earth are the crust, mantle, outer core, and the inner core.