Lifecycle of a Star Quiz

What is the initial stage in the lifecycle of a star?

• Red giant

• Stellar nebula

• Main-sequence star

• White dwarf

What force causes the dust and gas in a stellar nebula to come together?

• Gravity

• Nuclear force

• Electrostatic force

• Magnetism

At what temperature does a protostar form?

• Thousands of degrees

• Millions of degrees

• Billions of degrees

• Hundreds of degrees

What is the main process occurring in a main-sequence star?

• Nuclear fission

• Nuclear fusion

• Chemical reactions

• Gravitational collapse

How long can a star remain in the main-sequence phase?

• Between 1 thousand and 1 million years

• Between 100 million and 100 billion years

• Between 10 million and 10 billion years

• Between 1 million and 1 billion years

What happens when a smaller star runs out of hydrogen?

• It becomes a neutron star

• It becomes a black hole

• It becomes a red giant

• It becomes a supernova

What is the final stage of a smaller star's lifecycle?

• Red giant

• Black dwarf

• White dwarf

• Neutron star

What is the next stage after a red giant for a smaller star?

• Supernova

• Neutron star

• Black hole

• White dwarf

What is the main difference in the lifecycle of massive stars compared to smaller stars?

• They do not undergo nuclear fusion

• They have a shorter main-sequence life

• They do not form white dwarfs

• They do not form red giants

What is formed when a massive star collapses after running out of hydrogen?

• Black dwarf

• Super red giant

• White dwarf

• Red giant