The core is the ____ layer of the Earth. The ____ is made mostly of nickel and iron. The ____ is made of rock and metals. The ____ is the part of the Earth we walk on. The ____ is as hot as the Sun. The thickest layer of the Earth is known as the ____. The thinnest layer of the Earth is known as the ____. The ____ has both an inner and an outer portion. The ____ contains the ocean floor and continents. The deepest layer of the Earth is the ____. Underneath the crust is the ____. The crust and the ____ make up the lithosphere.

Layers of the Earth

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