Labels:car | crt screen | lepton | sky | windowpane OCR: 6TRUCTUR Crust: 33 km thick Mantle 2945 km thick Liquid Outer Core: 2100 km thick Inner Core: radius 1300 km Composition The core of the Earth composed of metallic nickel iron and iron oxides, is about 6,940 km 4 300 miles) in diameter. The outer 2,600 km (1 ,600 miles) of the core is molten and the rest is solid, with specific gravity of about 16. Surrounding the core is mantle composed of magnesium and iron silicate. bove the mantle isa thin crust, approximately 33 km (22 miles) thick, divided into 15 plates. The composition of the crust varies: under the continents consists of a substrata 01 granite rock rich in silicon and aluminum and under the oceans it primarily basalt rocks rich in silicon and maanesium Compositior abou
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