Black Holes and Their Mysteries

What is the main mystery surrounding black holes?

• Their temperature

• The fate of matter they swallow

• Their color

• Their size

What causes the gas around black holes to emit light?

• Friction between gas particles

• Magnetic fields

• Chemical reactions

• Nuclear reactions

What happens to gas as it spirals into a black hole?

• It forms a solid

• It cools down

• It disappears without a trace

• It heats up and emits light

What analogy is used to describe the heating of gas around black holes?

• Apollo rockets re-entering Earth's atmosphere

• The sun's surface

• A nuclear reactor

• A boiling pot of water

How are quasars related to black holes?

• They are remnants of supernovae

• They are distant stars

• They are feeding supermassive black holes

• They are small galaxies

What was the initial reaction of astronomers to the idea of quasars being black holes?

• Excitement

• Immediate acceptance

• Skepticism

• Indifference

What is the likelihood of the black hole at the center of our galaxy having a major feeding event soon?

• Low

• Moderate

• Impossible

• Very high

What is the expected duration of the black hole's potential feeding event at the center of our galaxy?

• About 10 years

• Several months

• A century

• A few days

What did Dr. John Magorian discover about galaxies and black holes?

• They are unrelated

• The mass of a galaxy is unrelated to its black hole

• The mass of a galaxy is related to the mass of its central black hole

• Black holes are larger than galaxies

What is the Magorian relationship?

• A model of cosmic expansion

• A hypothesis about dark matter

• A correlation between black hole mass and galaxy mass

• A theory about star formation