Life Cycle of a Star

Which of the following is the first stage in the life cycle of a star?

• Red giant

• Star forming nebula

• White dwarf

• Supernova

Fill in the blank: After a protostar forms, it becomes a _________

• Main sequence star

• White dwarf

• Red giant

• Neutron star

Match the following stages of a star's life cycle with their correct order:

• 1

• Supernova

• 3

• Protostar

• 4

• Red supergiant

• 2

• Neutron star

What is a nebula?

• A planet

• A cloud of dust where stars form

• A type of star

• A comet

Fill in the blank: Low-mass stars turn into planetary nebulae towards the end of their ______ phase.

• red giant

• main sequence

• white dwarf

• protostar

What happens to the material from the planetary nebula over time?

• It forms a new planet

• It is scattered into space

• It becomes a black hole

• It turns into a comet

Fill in the blank: Accretion is when ______ causes gas and dust to clump together.

• Gravity

• Friction

• Light

• Magnetism

What is the process called when gravity causes gas and dust to clump together?

• Fusion

• Accretion

• Erosion

• Evaporation

What is a protostar? Fill in the blank: A protostar is a _________.

• baby star

• giant planet

• comet

• asteroid

What is the minimum mass required for the formation of a star? Fill in the blank: The minimum mass for the formation of a star is about ______ times the mass of Jupiter.

• 80

• 8

• 800

• 18