CCA: Black Holes Quiz

What is the end state for the core of a high mass star if its mass is more than 3 times the Sun's mass?

• Red giant

• Neutron star

• White dwarf

• Black hole

What is the escape velocity of a neutron star with immense gravity?

• 11 km/sec

• 600 km/sec

• 150,000 km/sec

• 300,000 km/sec

What is the minimum mass required for a stellar-mass black hole to form?

• 1/3 the Sun's mass

• 1.4 times the Sun's mass

• 3 times the Sun's mass

• 10 times the Sun's mass

What happens to time near a black hole's event horizon?

• It speeds up

• It slows down

• It stops

• It reverses

What happens to light trying to escape from the vicinity of a black hole?

• It becomes infinitely blueshifted

• It becomes infinitely redshifted

• It slows down

• It speeds up

What is the effect of gravity on an object near a black hole?

• It decreases

• It increases

• It remains the same

• It becomes repulsive

What is the name for the surface around a black hole where the escape velocity is the speed of light?

• Red giant

• White dwarf

• Neutron soup

• Event horizon

What is the ultimate end state for the core of a high mass star?

• Black hole

• Neutron star

• White dwarf

• Red giant