The Earth is composed of several layers, excluding its atmosphere and hydrosphere.
Earth's Internal Structure
Here's a breakdown of what lies beneath our feet, moving from the outside in:
1. Crust
- The Earth's outermost layer.
- A solid, silicate layer.
2. Asthenosphere
- Located beneath the crust.
- A highly viscous layer.
3. Mantle
- Located below the asthenosphere.
- Consists of solid mantle material.
4. Outer Core
- A liquid layer made mostly of iron and nickel.
- The flow of this liquid generates Earth's magnetic field.
5. Inner Core
- The Earth's innermost layer.
- A solid sphere primarily composed of iron.
Earth's Layers Summary Table
| Layer | State | Composition | Key Feature |
|---|---|---|---|
| Crust | Solid | Silicate rocks | Outermost layer |
| Asthenosphere | Viscous | Silicate rocks | Highly viscous layer |
| Mantle | Solid | Silicate rocks | |
| Outer Core | Liquid | Iron and Nickel | Generates Earth's magnetic field |
| Inner Core | Solid | Iron | Innermost layer |
