1. Crust: The outermost layer of the Earth, composed of relatively light, rigid rock. It is divided into oceanic crust (thinner and denser) and continental crust (thicker and less dense).

2. Upper Mantle: This layer lies directly beneath the crust and extends down to about 410 kilometers. It is mostly solid but contains a partially molten zone known as the asthenosphere, which allows for plate tectonics.

3. Lower Mantle: Extending from 410 kilometers to about 2,890 kilometers, this zone is primarily solid, although it becomes more plastic with increasing depth.

4. Outer Core: A liquid layer composed mostly of iron and nickel, extending from 2,890 kilometers to about 5,150 kilometers. The liquid metal is responsible for the Earth's magnetic field.

5. Inner Core: The Earth's innermost zone, extending from 5,150 kilometers to the center at about 6,371 kilometers. It is a solid sphere composed mainly of iron and nickel, under immense pressure and heat.