Are black holes always big?

How are black holes formed?

Black holes are created when giant stars that are as big as our sun (or bigger) explode. They start to pull objects to it, and the middle becomes very dark. Once the things are inside, they are compressed into a smaller size, for example, if the Earth encountered a black hole, it would be the size of a golf ball.

Some theories say that black holes, when things are  inside, end up somewhere else.

Giant stars, when they explode, will create giant black holes. They will travel around, until they lose their energy and then fade away into nothing.

Some black holes become giant. They mostly stay in the centre of the galaxies. They are called 'Supermassive Black Holes.' It is said that radiation cannot escape them, but scientists have not proven that yet. They do know that they cover a large area and that they get their size by 'eating' small stars, space debris and asteroids.

Black holes are thought to suck things in, but some people say that things fall into them. This theory has not been proven yet, for no technology that has been used in space has gone into a black hole yet and no cameras have any recordings.

Black holes are very unique but can be very destructive. Let's hope that a medium sized black hole doesn't goes into our Solar system.

Learning intention: We are learning to follow the structure of an explanation.

Success criteria: I know I can do this when I write an introduction, an explanation and a conclusion to explain how black holes are formed.