How Inner Core Made?
It Is Widely Accepted That the Earth's Inner Core Formed About a Billion Year's Ago When a Solid, Super-Hot Iron Nugget Spontaneously Began to Crystallize...
It is widely accepted that the Earth's inner core formed about a billion years ago when a solid, super-hot iron nugget spontaneously began to crystallize inside a 4,200-mile-wide ball of liquid metal at the planet's center.
What is the worlds inner core made of?
The inner core is a hot, dense ball of (mostly) iron. It has a radius of about 1,220 kilometers (758 miles). Temperature in the inner core is about 5,200° Celsius (9,392° Fahrenheit).
When was inner core formed?
When Earth's solid inner core formed: 1 to 1.5 billion years ago.