1. Crust:
* The outermost layer of the Earth, thin and solid, like the skin of an apple.
* Divided into two types:
* Oceanic Crust: Found beneath the oceans, denser, and primarily made of basalt.
* Continental Crust: Forms the continents, thicker and less dense, mainly composed of granite.
2. Mantle:
* The thickest layer, mostly solid but with a semi-molten zone called the asthenosphere.
* Made primarily of silicate minerals like olivine and pyroxene.
* Responsible for plate tectonics through the movement of the asthenosphere.
3. Outer Core:
* Liquid layer primarily composed of iron and nickel.
* Generates the Earth's magnetic field through the movement of molten metal.
4. Inner Core:
* Solid sphere of iron and nickel, despite the intense heat.
* Extremely dense due to immense pressure.
5. Additional Layer: Lithosphere
* While not a separate layer, it's important to understand the lithosphere is the rigid outermost layer of the Earth, including the crust and the uppermost part of the mantle.
These layers play crucial roles in shaping the Earth's surface, driving geological processes like volcanoes and earthquakes, and creating the conditions necessary for life.
