Question

Why does the Earth's core stay hot?

Answer 1

Answer:

Earth core stay hot because when see back when earth was formed there was only volcano , lave and other hot elements which was cooled when a planet with full of water ( shaped like moon ) crashed on earth and because of that the earth became cooler on surface but still that hot magama ( magama is called lava when it comes on surface ) is not cooled down insife the earth and should be not ( to maintain earth temperature ) .

Hope it helps you ;)