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What are some unknown facts about the inner core?

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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. read more

The inner core is the Earth’s deepest layer, and it is a solid iron ball that is approximately 1,500 miles in diameter. Although it is extremely hot, the iron cannot melt due to the high pressure. The inner core also consists of nickel and sulfur and smaller amounts of elements other than iron. read more

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. read more

The inner core is the hottest region and the innermost region of the Earth. The outer core surrounds the inner core and borders the mantle, which is the third region and the closest region to the Earth’s crust. read more

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EARTH SCIENCE by Hunter Hayslip
Source: haikudeck.com

Further Research

Facts about the Earth's Mantle for Kids
www.scienceforkidsclub.com

Inner Core Facts
www.softschools.com

Layers of the Earth Facts
www.coolkidfacts.com