- Crust: The outermost layer, forming Earth's surface, labeled as 0-100 km thick.
- Lithosphere: Composed of the crust and the uppermost solid mantle, shown as a rigid layer above the asthenosphere.
- Mantle: The thick layer between the crust and core, depicted in orange and yellow shades, extending down to 2,900 km.
- Asthenosphere: The soft, solid rock layer within the upper mantle where convection currents occur; labeled directly below the lithosphere.
- Outer core: The liquid layer surrounding the inner core, shown as gray and labeled "Liquid," starting at 2,900 km depth.
- Inner core: The solid, dense center of Earth, labeled "Solid," beginning at 5,100 km depth.
- Core: The entire central region (inner and outer core combined), shown as the deepest part of the diagram, extending from 2,900 km to the center at 6,378 km.
- Convection current: Not a physical layer but a process occurring within the asthenosphere, transferring heat via fluid movement due to temperature differences.
Parent Tip: Review the logic above to help your child master the concept of structure of the earth worksheet.
