Crucigrama Layers of the EarthVersión en línea Crossword about the layers of the Earth. por Raquel Serrano Barrueta 1 People who study geology are called ... 2 3 4 Rocks and minerals are ... things. 5 ... is the study of the nonliving things that the Earth is made of. 6 One type of crust. 7 8 Mantle is made by ... rock. 9 Inner core is made by ... metal. 10 Outer core is made by liquid ... 11 12 Crust is made of solid .... rocks. 11 7 9 10 4 5 6 1 3