What is the thickness or depth of the inner core?

What is the thickness or depth of the inner core?

Unlike the yolk of an egg, however, the Earth’s core is actually made up of two distinct parts: a 2,200 km-thick liquid outer core and a 1,250 km-thick solid inner core.

What is the range of pressure for the inner core?

330 to 365 GPa3
The pressure range of the inner core (IC) is from 330 to 365 GPa3. The temperature is known less precisely, since the melting temperatures of iron have not been measured at the IC pressures. Recent assessment4 suggests that the melting temperature of iron in the center of the Earth could be close to 7000 K.

What is the range of depth for the mantle?

The upper and lower mantle. The upper mantle begins at a depth of from 5 to 50 kilometers (3−30 miles) and extends to a depth of approximately 670 kilometers (400 miles) from the surface; the lower mantle extends from a depth of about 670 kilometers (400 miles) to about 2,900 kilometers (1,740 miles).

What is the maximum depth for the stiffer mantle?

930 miles
And when they simulated how ferropericlase behaves mixed with bridgmanite deep underground in the upper part of the lower mantle, they calculated that the viscosity or stiffness of the mantle rock at a depth of 930 miles is some 300 times greater than at the 410-mile-deep upper-lower mantle boundary.

What is the pressure range of the mantle?

Pressures in the lower mantle start at 237,000 times atmospheric pressure (24 gigapascals) and reach 1.3 million times atmospheric pressure (136 gigapascals) at the core-mantle boundary.

What is the consistency of the inner core?

Earth’s core is made of a solid inner part and a fluid outer part, all of it mostly iron. The solid inner core has an uneven consistency, with some parts denser than others, and this can either speed up or slow down shock waves from earthquakes as they pass through.

What is the depth to the boundary of the outer and inner core?

about 5,100 km
At a depth of about 2,900 km (1,800 miles), the lower mantle gives way to Earth’s outer core, which is made up of a liquid rich in iron and nickel. At a depth of about 5,100 km (3,200 miles), the outer core transitions to the inner core.

What is the density and thickness of the inner core?

Thickness: 760 miles (∼1,220 km) Density: 12,600 – 13,000 kg/m 3. It is the center, and the hottest part of the earth. Similar to the outer core, the inner core is composed primarily of iron and nickel and has the highest density among all other layers. The inner core is made mostly metals such as gold, platinum, palladium, silver, and tungsten.

How thick is the inner core?

The layers of Earth are: Crust – 5 to 70 km thick Mantle – 2,900 km thick Outer Core – 2,200 km thick Inner Core – 1,230 to 1,530 km thick

How deep below the crust is the inner core?

The crust, or outer portion, varies in depth from 5 to 25 miles (8 to 40 kilometers). Below the crust is the mantle, which extends to a depth of about 1,800 miles (2,900 kilometers). Below that is the core, composed of a liquid outer core about 1,380 miles (2,200 kilometers) in depth, and a solid inner core about 780 miles (1,300 kilometers) deep.

What are some interesting facts about the inner core?

Interesting Inner Core Facts: The temperature of the inner core is believed to be approximately 5400 degrees Celsius, or 5700 Kelvin. This heat is caused by three elements: residual heat from the formation of the earth, gravitational forces from the moon and the sun, and and radioactive decay of earth’s inner elements.