🌎’s core is made of magma/lava right? Where does all the energy comes from and how come it’s still in liquid state after millions of years.

Question

🌎’s core is made of magma/lava right? Where does all the energy comes from and how come it’s still in liquid state after millions of years.

In: Earth Science

Answer 1

The core is solid iron/nickel, but the area between that and the crust is molten. The planet started off very hot, and like a giant hydroflask it takes a while for all that energy to leak out. Additionally, while there isn’t a lot of radioactive stuff down there, the planet is sufficiently well insulated that radiation keeps it warm.