WONDER #596: What Is a Black Hole?

Question 1 of 3

A black hole forms when a __________ collapses.

1. planet
2. comet
3. asteroid
4. star

Question 2 of 3

When was the first photograph of a black hole taken?

1. 1900
2. 1999
3. 2019
4. There has never been a photograph taken of a black hole.

Question 3 of 3

The center of a black hole is called a _____________.

1. pit
2. singularity
3. vacuum
4. galaxy

Check your answers online at https://wonderopolis.org/index.php/wonder/What-Is-a-Black-Hole.