Question

Why is earth outer core molten while the inner is solid?

Answer 1

Answer:

Earth´s inner core and outer core are both made of an iron-nickel alloy. ... As you go deeper in the Earth both temperature and pressure increases. Although the inner core is very hot, it is solid because it is experiencing very high pressure. The pressure in the outer core is not high enough to make it solid

Answer 2

Explanation:

because inner core more prone to pressure and core is free to the environment and do get cooled easily ..