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.
State: liquid / solid. Composition: iron, oxygen, silicon, magnesium and aluminium. This layer is up to 670km below the Earthâs surface. The lower part of the upper mantle is made from both solid and melted rock (liquid), while the rock in the upper region is stiffer, because itâs cooler.