For other people named Neville Chamberlain, see Neville Chamberlain (disambiguation). Arthur Neville Chamberlain, FRS (18 March 1869 â 9 November 1940) was a British Conservative politician who served as Prime Minister of the United Kingdom from May 1937 to May 1940.
From Wikipedia, the free encyclopedia. The outer core of the Earth is a liquid layer about 2,300 km (1,400 mi) thick and composed of iron and nickel that lies above Earth's solid inner core and below its mantle. Its outer boundary lies 2,890 km (1,800 mi) beneath Earth's surface.
The outer core of the Earth is a liquid mix of elements, mostly iron and nickel, with smaller amounts of silicon and oxygen. It goes from a depth of 2550 km below the surface of the Earth to 4750 km at the boundary of the inner core, during which time the temperature increases from 4500 to 5500 degrees Celsius.