Exploring the Mysteries of Black Holes

What is the estimated number of black holes in our galaxy?

• 100 million

• 100,000

• 50

• 1 billion

What happens to a star when it runs out of hydrogen in its core?

• It explodes into a supernova

• It turns into a neutron star

• It starts burning helium and expands

• It becomes a black hole immediately

What is a white dwarf?

• A supernova remnant

• A type of neutron star

• The dense core of a star after it has shed its outer layers

• A type of black hole

What is the primary difference between a neutron star and a black hole?

• Neutron stars are larger than black holes

• Neutron stars are formed from stars less massive than those that form black holes

• Neutron stars are less dense than black holes

• Neutron stars emit light, black holes do not

What is a singularity in the context of black holes?

• A type of neutron star

• A region where light cannot escape

• A point of infinite density

• A point where gravity is zero

What causes the redshifting of light near massive objects like neutron stars and white dwarfs?

• The rotation of the object

• The expansion of the universe

• The curvature of space

• The temperature of the object

What is the event horizon of a black hole?

• The point where light can escape

• The center of the black hole

• The region where nothing can escape, including light

• The outermost layer of the black hole

What is the Schwarzschild radius?

• The distance from the singularity to the event horizon

• The radius of the black hole's core

• The radius of the black hole's accretion disk

• The distance light travels around the black hole

What is the term used to describe the stretching of objects falling into a black hole?

• Event horizon effect

• Gravitational stretching

• Spaghettification

• Tidal disruption

What is the name of the supermassive black hole at the center of our galaxy?

• Sagittarius A*

• Galactic Core

• Andromeda A

• Milky Way B