1. Crust:
* Thickness: 5-70 km (3-44 miles) (varies greatly depending on whether it's oceanic or continental crust).
* Relative Size: The thinnest layer, like the skin of an apple.
2. Mantle:
* Thickness: 2,900 km (1,800 miles)
* Relative Size: The largest layer by volume, making up about 84% of Earth's total volume. Think of it as the "meat" of the apple.
3. Outer Core:
* Thickness: 2,200 km (1,400 miles)
* Relative Size: About 15% of Earth's total volume.
4. Inner Core:
* Thickness: 1,220 km (758 miles)
* Relative Size: About 1% of Earth's total volume. Imagine a small seed inside the apple.
To visualize these sizes, think of an apple:
* Crust: The thin skin.
* Mantle: The fleshy part between the skin and the core.
* Outer Core: The core itself, with the inner core being a smaller sphere inside.
Important Note: These are relative sizes. The Earth's layers are not uniform in thickness, and the sizes are constantly changing due to geological processes.
