What is the composition of earth's core? solid rock solid iron surrounded by molten iron molten iron surrounded by solid iron hydrogen gas

The composition of Earth's core Solid iron surrounded by molten iron .

Explanation:

Earth's Core -

Earth's core is the hottest and the deepest layer in the Earth . It is composed of two layers , first is , the outer core , which is type of border between the mantle and the core , and second is the inner core .

The inner core is rich in solid , and mainly contains iron , and the outer core is in liquid state , which is rich in nickel and iron metals . the outer core is where the Earth gets its magnetic field .

the answer is blue river