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.
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.
The Inner Core is the most dense part of the Earth. It is a solid core of iron and nickel.
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.
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.
inner core
Earth is part of the Inner Solar System.
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.
inner core
inner core
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.
The inner core
Earth is the third planet. It is the inner part of solar system.