Deducing Black Holes

What is the event horizon in the context of black holes?

• A boundary beyond which nothing can escape from a black hole

• A hypothetical surface surrounding a black hole

• A region where light can escape from a black hole

• The center of a black hole

Why is it difficult to create a black hole in a laboratory?

• Because they are not predicted by any scientific theory

• Because they require extremely high temperatures

• Because they require strong gravitational fields

• Because they are too small to be observed

What discovery led to the understanding of supermassive black holes?

• The discovery of gravitational waves

• The discovery of quasars

• The discovery of dark matter

• The discovery of neutron stars

How were quasars initially identified?

• As objects with unusual radio emissions

• As stars with unique colors

• As galaxies with high luminosity

• As planets with strong magnetic fields

What role did the Hubble telescope play in the study of black holes?

• It discovered the first black hole

• It provided evidence of dark matter

• It helped find massive concentrations of dark mass in galaxies

• It measured the speed of light in space