Earths Layers

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Across
  1. 2. The densest, hottest, innermost layer that forms a solid ball of iron and nickel.
  2. 4. Earth's thickest layer, located between the crust and the outer core, made of hot, solid or semi-molten rock.
Down
  1. 1. The outer layer of the Earth and the thinnest, rocky surface where we live
  2. 3. A hot, liquid layer composed of melted iron and nickel surrounding the inner core.