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    Question

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

    A Mantle Correct Answer Incorrect Answer
    B Core Correct Answer Incorrect Answer
    C Lithosphere Correct Answer Incorrect Answer
    D Biosphere Correct Answer Incorrect Answer

    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.

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