Well we'd all die
It is possible but extremely unlikely.
The object swallowed by the black hole is destroyed; its mass is added to the mass of the black hole.
If the Earth magically became a black hole, the moon and other satellites in orbit around Earth, would be literally ripped apart into tiny bits and swallowed by the black hole.
Its mass. All the stuff it has swallowed.
setting
A black hole is basically an imploded star's remnants that DO NOT turn into a nebula or space dust of some type. However, for a "dead" star to become a black hole it must be very big and have tons of mass. The Sun doesn't have that size requirement, therefore cannot be a black hole theoretically.
A black hole can,but it is very rare for a black hole big enough to swallow Earth.
Earth dies too.Either one of two things will happen: 1. The amount of helium in the sun will get so small and the amount of carbon dioxide will get so big, that the Earth will be swallowed by the sun.or2. The sun will explode and form into a big black hole and Earth and all the other planets will be going in the black hole.
No. Earth would be destroyed if a black hole came anywhere close to it.
Should Earth ever collide with a black hole, it would get destroyed.
no
Some stars, comets, stardust, moons, planets, have been "eaten" by a black hole. None know for sure how many of each.