Although each can be further sub-divided, the three major layers of the Earth are the crust, the mantle, and the core. Although I cannot draw them, the first link I have attached below will enable you to do so.
The crust is the outermost surface of the Earth. Its thickness on the continents varies from about 5 to 70 kilometers, and under the oceans is about 5-6 km thick. This is very thin compared to the diameter of the Earth and has been compared to the skin of an apple. It is made of igneous, metamorphic, and sedimentary rock.
The mantle is below the crust. It is the thickest of the three layers — about 2900 km — and makes up about 80-84% of the total volume of the Earth. While mostly solid, it can "flow" if subjected to enough pressure.
The Earth's core is molten rock, mostly iron and nickel, with a solid center. It makes up about half the Earth's diameter.
For more detailed information, including specifics on rock types, see the second link below.
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