Blackholes - Kurzgesagt

What happens to a star when it runs out of hydrogen to fuse?

• It turns into a black hole immediately

• It starts fusing helium into heavier elements

• It becomes a white dwarf

• It explodes into a supernova instantly

What is the final element a star can fuse before it dies?

• Helium

• Hydrogen

• Carbon

• Iron

What is the event horizon of a black hole?

• The point of no return, where escape velocity exceeds the speed of light

• A region where time stands still

• The outermost layer of the black hole that emits light

• The center of the black hole where all mass collapses

What would happen if the sun was replaced by a black hole of the same mass?

• Earth would be sucked into the black hole

• Earth's orbit would remain largely unchanged

• Earth would instantly freeze

• The solar system would collapse

What is a singularity in the context of a black hole?

• A stable region where matter accumulates

• The outer edge of the black hole

• A small opening in the event horizon

• A point of infinite density

How do black holes evaporate?

• Through collisions with other black holes

• By emitting X-rays

• By absorbing dark matter

• Via Hawking radiation

What is the largest type of black hole called?

• Stellar mass black hole

• Intermediate black hole

• Miniature black hole

• Supermassive black hole

What would happen to you if you fell into a black hole?

• You would be compressed into a singularity

• You would be teleported to another universe

• You would orbit the black hole indefinitely

• You would be stretched into a long strand of atoms

What is the name of the largest known supermassive black hole?

• Cygnus X-1

• M87*

• S5 0014+81

• Sagittarius A*

How long might it take for the largest black holes to evaporate?

• They do not evaporate

• A million years

• A billion years

• A googol years