Understanding Black Holes

What is a common misconception about the appearance of black holes?

• They emit bright light.

• They are completely invisible.

• They have a solid surface.

• They are always surrounded by stars.

Which of the following statements is true about the sizes of black holes?

• Black holes are only found in small galaxies.

• All black holes are the same size.

• Black holes can vary in size depending on their mass.

• Black holes are larger than any galaxy.

What is the relationship between supermassive black holes and galaxies?

• Galaxies form around existing black holes.

• Supermassive black holes form after galaxies.

• There is no relationship between them.

• They likely formed at the same time and grew together.

How close can you theoretically get to a black hole with the same mass as our Sun without being pulled in?

• Millions of miles

• Tens of miles

• You cannot get close at all

• A few thousand miles

What did Stephen Hawking theorize about black holes?

• They are completely solid.

• They emit a type of radiation that can cause them to evaporate.

• They are the coldest objects in the universe.

• They can be used as portals to other galaxies.