What is the name of the Earth's outermost solid layer?

Solution

Sol. The Earth's outermost solid layer is called the lithosphere, which includes the crust and the upper mantle. This layer is about 60-200 km thick. Information Booster:

• The lithosphere is the solid outer part of the Earth.
• It includes the crust and the upper mantle.
• Plate tectonics occur within the lithosphere.
• It is the foundation for geological phenomena.
• The lithosphere provides the necessary structure for life on Earth.

• Mantle: The layer beneath the lithosphere.
• Core: The Earth's center, with a liquid outer core and a solid inner core.
• Biosphere: The total area where life exists on Earth.