1. Compositional Layers:
* Crust: The outermost, thin, rocky layer. It's divided into oceanic crust (thinner, denser, and made mostly of basalt) and continental crust (thicker, less dense, and made mostly of granite).
* Mantle: The thickest layer, made of mostly solid rock (with some molten regions). It's divided into the upper mantle (which includes the asthenosphere, a partially molten layer) and the lower mantle.
* Core: The Earth's innermost layer, composed primarily of iron and nickel. It's further divided into the outer core (liquid) and the inner core (solid, due to immense pressure).
2. Physical Layers:
* Lithosphere: The rigid, outermost layer of the Earth, including the crust and the upper portion of the mantle. It's broken into tectonic plates.
* Asthenosphere: A semi-molten, partially solid layer in the upper mantle. It's where tectonic plates move.
* Mesosphere: The lower part of the mantle, which is solid but can flow very slowly over time.
* Outer Core: Liquid iron and nickel, generating the Earth's magnetic field.
* Inner Core: Solid iron and nickel, incredibly dense and hot.
In addition to these layers, the Earth also has an atmosphere, a hydrosphere (water), and a biosphere (living organisms).
Let me know if you want to know more about any specific layer!
