Earth's inner core is the innermost geologic layer of the Earth. It is primarily a solid ball with a radius of about 1,220 kilometres (760 miles), which is about 20% of the Earth's radius or 70% of the Moon's radius. There are no samples of the Earth's core available for direct measurement, as there are for the Earth's mantle. Information about the Earth's core mostly comes from analysis of seismic waves and the magnetic field.The inner core is believed to be composed of an iron–nickel alloy with some other elements. The temperature at the inner core's surface is estimated to be approximately 5700 K (5430 °C or 9806 °F), which is about the temperature at the surface of the Sun.
If the core were to cool completely, the planet would grow cold and dead. ... Cooling also could cost us the magnetic shield around the planet created by heat from the core. This shield protects Earth from cosmic radiation. The shield is created by a convection process caused by constantly moving iron.
What would happen if the Earth's core cooled?, Is the core of the Earth cooling?,
What is the temperature of the Earth's inner core?, What is the meaning of core of the earth?, earth's outer core, inner core facts video, what is the inner core made of
inner core definition, earth's core facts image, inner core thickness, earth wikipedia
layers of the earth,
0 Comments