Our planet is made up of four layers: the crust, mantle, external core and inner core. The late is the top-most layer, adhered to by the thickest layer, the mantle. The innermost class is the core, and it is written of the outer and inner core. This post seeks to to mark the gimpppa.org in between the two innermost layers of the Earth.

You are watching: What is the difference between the inner and outer core


Inner CoreOuter Core
Innermost layer of EarthSurrounds the within core
Solid round of iron and also nickelMade of fluid iron and nickel
Has a radius the 1,220 kilometers or 768 milesApproximately 2,300 kilometers or 1,400 miles 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 degrees Fahrenheit

Definitions

*
A cross-section that the planet showing its different layers

The inner core is the innermost great of the Earth, and also is thought to be a solid sphere composed of iron and nickel along with some light aspects (e.g., oxygen, sulfur, silicon). It has an estimated radius that 1220 kilometres (768 mi).

Seismologist Inge Lehmann to be the first to uncover the inner core as being solid and covered by a liquid outer core. Lehmann was able to arrive in ~ this conclusion by studying seismic waves resulted in by earthquakes bouncing off the inner core’s boundary. That was suggested in 1940 the this inner main point is heavy iron.

It is a widely-held belief that the inner core is gradually widening as the liquid external core cools down and also solidifies whereby the two layers meet. This growth is believed to be vital in generating the planet’s magnetic field. In addition, scientists likewise believe this phenomenon suggests a homogeneous properties of the inner core; the is, it remains solid if it is cultivation into the liquid outer core. It has been said the inner core could additionally be a huge iron crystal. This theory was disproved once the inner main point was uncovered to it is in not totally uniform. Recently, researcher have found that the within core likewise contains an within inner core. That is thought to be in between 250 come 400 kilometers in diameter.

The outer core of the planet is a fluid layer of iron and 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 approximated that the temperature that the external core is indigenous 4,000-8,000 K (6,740-13,940 levels F or 3,730-7,730 levels C) together it gets close to the inner core, and 3,400-4,500 K (4,940-7,640 degrees F or 2,730-4,230 degrees C) in its external regions.

The constant churning of liquid iron the the outer core creates magnetic fields and also electricity. This constant process is dubbed the geodynamo, and it is responsible for the magnetic field surrounding our planet. Without the earth magnetic field, our environment would be conveniently blown away by solar winds.

Inner core vs outer Core the the Earth

Now the we have the facts, what’s the gimpppa.org in between the inside core and outer core of the Earth? The earth inner main point is a solid round of iron, nickel and other metals, if the external core is liquid steel composed of iron and nickel as well. The temperature the the inner core is estimated to be about 5,400 degrees C or 9,800 degrees F, far beyond iron’s melt point. Intense pressure present within the inside core prevents the iron from melting. The hottest an ar of the external core is about 3,730-7,730 levels C or 6,740-13,940 levels F.

See more: How Far Can A Horse Swim ? All You Need To Know About Swimming With Your Horse

In terms of size, the within core’s radius is around 1,220 kilometers (768 miles). The outer core is believed to be about 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 beneath the surface.