Our earth is comprised of 4 layers: the crust, mantle, outer core and inner core. The late is the top-most layer, adhered to by the thickest layer, the mantle. The innermost layer is the core, and also it is written of the outer and inner core. This post seeks to highlight the usmam.org in between the two innermost layers of the Earth.

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Inner CoreOuter Core
Innermost layer of EarthSurrounds the inner core
Solid ball of iron and nickelMade of fluid iron and nickel
Has a radius that 1,220 kilometers or 768 milesApproximately 2,300 kilometers or 1,400 mile thick
Temperature approximated to be around 5,400 levels Celsius or 9,800 levels FahrenheitHottest an ar is about 3,730-7,730 degrees Celsius or 6,740-13,940 levels Fahrenheit


A cross-section of the earth showing its various layers

The inner core is the innermost class of the Earth, and is thought to it is in a solid round composed that iron and also nickel in addition to some light elements (e.g., oxygen, sulfur, silicon). It has actually an estimated radius of 1220 kilometres (768 mi).

Seismologist Inge Lehmann was the first to uncover the inner main point as being solid and also covered by a liquid outer core. Lehmann had the ability to arrive in ~ this conclusion by researching seismic waves caused by earthquakes bouncing turn off the within core’s boundary. It was suggested in 1940 the this inner core is hard iron.

It is a widely-held id that the inner core is gradually broadening as the liquid external core cools down and solidifies wherein the two layers meet. This expansion is believed to be vital in generating the planet’s magnetic field. In addition, scientists also believe this phenomenon suggests a homogeneous properties of the inner core; the is, it continues to be solid if the is growing into the liquid outer core. It has been said the inner core could likewise be a large iron crystal. This theory was disproved once the inner core was found to it is in not fully uniform. Recently, researcher have found that the within core likewise contains an inner inner core. It is believed to be in between 250 come 400 kilometers in diameter.

The outer core of the planet is a fluid layer of iron and also nickel 2,890 kilometers (1,400 miles) in ~ the surface ar of the Earth. It follow me to around 2,300 kilometers (1,400 miles). It is estimated that the temperature the the outer core is from 4,000-8,000 K (6,740-13,940 degrees F or 3,730-7,730 degrees C) together it gets close to the inner core, and also 3,400-4,500 K (4,940-7,640 levels F or 2,730-4,230 degrees C) in its outer regions.

The consistent churning of fluid iron the the external core create magnetic fields and electricity. This consistent process is dubbed the geodynamo, and it is responsible because that the magnetic ar surrounding our planet. Without the earth magnetic field, our atmosphere would be quickly blown far by solar winds.

Inner main point vs outer Core of the Earth

Now that we have the facts, those the usmam.org between the inside core and outer core of the Earth? The earth inner core is a solid round of iron, nickel and also other metals, if the external core is liquid metal composed the iron and nickel together well. The temperature that the inner main point is estimated to be around 5,400 levels C or 9,800 levels F, far past iron’s melting point. Extreme pressure current within the inside core prevents the iron native melting. The hottest an ar of the external core is around 3,730-7,730 degrees C or 6,740-13,940 degrees F.

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In terms of size, the inner core’s radius is around 1,220 kilometers (768 miles). The external core is believed to be around 2,300 kilometers (1,400 miles) thick, and is situated 2,890 kilometers (1,400 miles) in ~ the surface ar of the Earth. The inner core is about 6,371 kilometers (3,958 miles) deep in ~ the surface.