Are the exact measurements known of how big a meteor needs to be to breach the atmosphere and land on Earth versus burn up in it and disappear?

Question

Are the exact measurements known of how big a meteor needs to be to breach the atmosphere and land on Earth versus burn up in it and disappear?

In: Planetary Science

Answer 1

When they say a meteor burns up, what actually happens? Does it fall apart into smaller and smaller rocks while all the ice and gaseous materials boil away? Will tiny, slower meteorites land over an area? If it’s a small iron meteor, certainly the iron doesn’t go away.