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Radioactive decay heating. The heavy isotopes settled toward the center of the earth early in its formation and many of those isotopes are radioactive, their decay produces heat.

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Solid part of core of earth?

The solid part of Earth's core is the inner core, consisting mostly of iron and nickel. It is about 1,500 miles in diameter and is extremely hot, with temperatures reaching up to 9,000 degrees Fahrenheit. The immense pressure at the center of the Earth keeps the inner core solid despite its high temperature.


What is the most dense region of the earth called?

The Inner Core is the most dense part of the Earth. It is a solid core of iron and nickel.


Which part of the core is probably solidified?

The inner core of the Earth is believed to be solid due to high pressure and temperature conditions. It is composed mainly of solid iron and nickel, while the outer core is in a liquid state.


What are the physical properties of the inner core?

The inner core of the Earth is solid due to high pressure, even though it is made up primarily of iron and nickel. It has a temperature of about 5700 degrees Celsius, making it the hottest part of the Earth.


What is the inner part of the Earth?

inner core


Is earth part of the inner solar system or the outer system?

Earth is part of the Inner Solar System.


What is the densest part of earth?

The inner core is the densest part of the Earth, with a composition of mostly iron and nickel. It is solid due to immense pressure, despite the high temperatures.


What part of the inner earth is hottest?

inner core


What part of inner earth is hottest?

inner core


What part of the earth is believed to be solid iron and nickel?

The inner core of the Earth is believed to be solid iron and nickel. It is the innermost part of the Earth, located beneath the outer core and composed mainly of iron and nickel due to the extreme pressure and temperature conditions.


What is the inner-most part of the earth?

The inner core


Is the Earth part of the inner or outer solar system?

Earth is the third planet. It is the inner part of solar system.