In the outer core, they form an alloy. The outer core, about 2,200 kilometers (1,367 miles) thick, is mostly composed of liquid iron and nickel. The hottest region of the outer core is about 3,730-7,730 degrees … The outer core begins about 1,800 miles under the crust. While most of the layers are made of solid material, there are several pieces of evidence suggesting that the outer core is indeed liquid. The outer core’s velocity profile seems to record the secular evolution of the core’s composition as the subadiabatic layer grew, possibly modified by core–mantle reaction. Although oxygen, silicon, carbon, nitrogen, sulfur, and hydrogen have been proposed as candidates for light components (Stevenson, 1981), little is known yet about amounts and species. The outer core consists of hot lava that is comprised mostly of iron and nickel. The Outer Core is composed of iron and some nickel. The outer core consists of hot lava that is comprised mostly of iron and nickel. There is very few rocks and iron and nickel ore left in the Outer Core because of the Inner Core melting all the metal into liquid magma. It is believed that the core also contains a large amount of gold and platinum, so much that if it was poured onto the surface it would cover the entire planet up to 1 1/2 feet. Of course, there is still no direct evidence about the exact composition of the core. This magnetic field protects our Earth from the Sun’s deadly wind. Earth consists of four major layers: the crust, mantle, outer core and inner core. The temperature of the inner core is estimated to be about 5,400 degrees C or 9,800 degrees F, far beyond iron’s melting point.
The composition of the present Earth's outer core reflects various processes, such as core formation, inner core growth, and core-mantle chemical interactions. The remaining liquid iron is lighter and rises. Note that it is divided between the outer core, which is about 2400 kilometers thick, and the inner core, which has a radius of 1220 kilometers. The earth has a liquid outer core and a solid inner core.

Earth consists of four major layers: the crust, mantle, outer core and inner core.

The liquid metal of the outer core has very low viscosity, meaning it …

It rotates eastward, like the surface, but it’s a little faster, making an extra rotation about every 1,000 years. The mantle/core mass ratio of the terrestrial planets increases in the following order: Mercury, Earth, Venus, and Mars. The liquid outer core separates the inner core from the rest of the Earth, and as a result, the inner core rotates a little differently than the rest of the planet. Since it is a liquid, the outer core can spin, and it does. So much pressure that, even though it is so hot, it is solid. Of the Earth, both the Inner Core and the Outer Core are believed to consist of a nickel iron mixture. Both of these two metal are in a liquid state due to intense heat. Intense pressure present within the inner core prevents the iron from melting. Deep within the Earth, thousands of kilometers below your feet is the core of the Earth. Density, seismic-wave data and Earth’s magnetic field provide insight into not only the structure but also the composition of Earth’s core. Nature : The nature of the inner core of the earth is solid due to high pressure on it. The layer that surrounds the inner core is known as the outer core of the earth. This layer is so hot that all metals in it are in a liquid state. Earth's core has two parts, a solid iron inner core and a molten outer core, which is composed of a nickel-iron alloy.