The Earth's crust started to solidify around 3.5 billion years ago as the Earth's surface began to cool from its initial molten state. The solidification process continued over millions of years, leading to the formation of the solid crust we have today.
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The continental crust is solid. It is composed of rocks and minerals that form a rigid outer shell above the Earth's mantle.
The thin solid outermost layer above the mantle is the crust, and the crust is the layer we live on.
It is both solid and liquid because the crust is a layer of solid rock that includes both dry land and the ocean floor the main elements in the crust are oxygen and silicon =]
The crust is solid rock. Soil only makes up a small part of the crust right at its surface.
The Moho, short for Mohorovičić discontinuity, is a boundary in the Earth's crust that separates the solid crust from the underlying mantle. So, the Moho is where the solid crust transitions into the solid mantle, but it is not a solid or liquid layer itself.