Earth's Layer Matching Online version Layer's of the Earth matching exercise by Eva Lis Amat 1 Core 2 Mantle 3 Crust Deepest layer of the earth is as hot as the sun has an inner and outer portion made mostly of nickel and iron Thickest layer of the earth five times hotter than boiling water made of solid and melted rock slowly moves like putty thinnest layer of the earth the outermost layer made mostly of granite and rocks contains the ocean floor and continents