Understanding Black Holes

What happens if you get too close to a black hole?

• You pass through it unharmed.

• You orbit around it indefinitely.

• You bounce off its surface.

• You are sucked into the event horizon.

What is the singularity in a black hole?

• A place where time stops.

• A large empty space.

• A point where all the mass is concentrated.

• A region with zero mass.

How are stellar-sized black holes formed?

• From the explosion of a large star.

• From the cooling of a small star.

• From the collision of two stars.

• From the merging of two planets.

What is the closest supermassive black hole to Earth?

• Andromeda A

• Sagittarius A*

• Cygnus X-1

• Vega

What remains in a black hole after matter falls into it?

• The matter is destroyed.

• The mass remains.

• The matter is converted to light.

• The energy is released.

What happens to the core of a massive star when it forms a black hole?

• It turns into a white dwarf.

• It becomes a neutron star.

• It collapses into a singularity.

• It expands.

Are black holes rare in the universe?

• Yes, they are extremely rare.

• No, they are common and found in every galaxy.

• They only exist in the Milky Way.

• They are only found in binary systems.

What is the main difference between a black hole and a wormhole?

• A wormhole is a collapsed star.

• A black hole is a type of star.

• A wormhole is a theoretical connection between two points.

• A black hole is a gateway to another universe.

Can black holes have magnetic fields?

• Only if they are in binary systems.

• Yes, especially if they are feeding.

• No, they cannot.

• Only supermassive black holes can.

Is it possible that our universe is inside a black hole?

• No, it's impossible.

• No, because black holes are too small.

• Yes, but it's untestable.

• Yes, and it has been proven.