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# What is the depth of the inner core?

## What is the depth of the inner core?

The core is found about 2,900 kilometers (1,802 miles) below Earth’s surface, and has a radius of about 3,485 kilometers (2,165 miles). Planet Earth is older than the core.

## What is the starting depth of the inner core?

5,150 km
What is the depth of the inner core of the Earth? The inner core of the earth starts at 5,150 km from the Earth’s surface and extends to the center of the Earth.

How deep is the core of the earth in feet?

The center of the earth lies 6,400 kilometers (4,000 miles) beneath our feet, but the deepest that it has ever been possible to drill to make direct measurements of temperature (or other physical quantities) is just about 10 kilometers (six miles).

What is the depth of earth?

Definitions

Depth (km) Chemical layer Depth (km)
670–2,890 Lower mantle 670–2,890
2,890–5,150 Outer core 2,890–5,150
5,150–6,370 Inner core 5,150–6,370
* Depth varies locally between 5 and 200 km. † Depth varies locally between 5 and 70 km.

### What is the role of inner core?

Earth’s solid-metal inner core is a key component of the planet, helping to give rise to the magnetic field that protects us from harmful space radiation, but its remoteness from the planet’s surface means that there is much we don’t know about what goes on down there.

### 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.