It is somewhere between 3,160 and 3,954 miles, or 5,150-6,360km, to the inner core of the earth. This varies due to different heights of the earth above sea level. It is between 1,790 - 3,160 miles to the outer core and between 410-1,790 miles to the lower mesosphere.
The upper mesosphere is between 22 and 410 miles below the surface and Asthensphere between 62 and 125 miles. We then have the mantle, which is between 22 and 1, 790 miles below the surface followed by the uppermost part of the mantle which usually sits at around 22-37 miles below the surface. The crust is between 0 and 22 miles and on the top we have the Lithosphere, which is the surface of the earth.
The inner core of the earth is the hottest part of the earth and is around 760 miles in radius. It is believed to consist of an iron-nickel alloy, and may have a temperature similar to the sun's surface, approximately 5778 K (5505 °C). The outer core is so hot that the metal is always molten, but the inner core pressures are so great that it cannot melt, even though temperatures there reach 6700ºF (3700ºC). As the earth rotates, the outer core spins around the inner core and that causes the earth's magnetism. Life on earth would not be possible if we did not have this magnetic field that surrounds us and is produced in the centre of the earth.
The liquid outer core surrounds the inner core and is believed to be composed of iron mixed with nickel and trace amounts of lighter elements. Recent speculation suggests that the innermost part of the core is enriched in gold, platinum and other siderophile elements.
The upper mesosphere is between 22 and 410 miles below the surface and Asthensphere between 62 and 125 miles. We then have the mantle, which is between 22 and 1, 790 miles below the surface followed by the uppermost part of the mantle which usually sits at around 22-37 miles below the surface. The crust is between 0 and 22 miles and on the top we have the Lithosphere, which is the surface of the earth.
The inner core of the earth is the hottest part of the earth and is around 760 miles in radius. It is believed to consist of an iron-nickel alloy, and may have a temperature similar to the sun's surface, approximately 5778 K (5505 °C). The outer core is so hot that the metal is always molten, but the inner core pressures are so great that it cannot melt, even though temperatures there reach 6700ºF (3700ºC). As the earth rotates, the outer core spins around the inner core and that causes the earth's magnetism. Life on earth would not be possible if we did not have this magnetic field that surrounds us and is produced in the centre of the earth.
The liquid outer core surrounds the inner core and is believed to be composed of iron mixed with nickel and trace amounts of lighter elements. Recent speculation suggests that the innermost part of the core is enriched in gold, platinum and other siderophile elements.