The Life Cycle of Stars Quiz

What happens to a star about the same mass as the Sun after it leaves the main sequence?

• It collapses into a white dwarf.

• It expands to become a red giant.

• It expands to become a red super giant.

• It starts to fuse hydrogen in its core.

What is the fate of a star far greater in mass than the Sun after becoming a red supergiant?

• It remains stable for 10 billion years.

• It becomes a main sequence star.

• It explodes in a supernova.

• It becomes a black dwarf.

What is a nebula mostly composed of?

• Helium

• Oxygen

• Carbon

• Hydrogen

During which stage is the Sun currently?

• Protostar

• Main sequence star

• White dwarf

• Neutron star

What happens to a star's core during the main sequence phase?

• It cools down significantly

• It contracts under its own gravity

• It undergoes nuclear fusion, converting hydrogen into helium

• It expands into a red giant

What process occurs when a star is hot enough for hydrogen nuclei to fuse together?

• Condensation

• Supernova

• Nuclear fusion

• Gravitational contraction

What marks the end of a smaller star's life cycle, like the Sun?

• Neutron star

• Black hole

• White dwarf

• Supernova

What can a supernova leave behind?

• A red giant

• A main sequence star

• A neutron star or a black hole

• A protostar

Which stage follows the white dwarf in the life cycle of a star like the Sun?

• Red giant

• Black dwarf

• Supernova

• Neutron star

What is the first stage in the life of all stars?

• Main sequence star

• Red giant star

• Protostar

• Nebula