The Life Cycle of a Star Read it

What is the initial stage of a star's life cycle?

• Nebula

• Protostar

• Main sequence

• Red giant

At what temperature does nuclear fusion begin in a star?

• 150,000,000 degrees Fahrenheit

• 100,000,000 degrees Fahrenheit

• 200,000,000 degrees Fahrenheit

• 50,000,000 degrees Fahrenheit

What happens to a low-mass star after it becomes a red giant?

• It sheds outer layers to form a planetary nebula and becomes a white dwarf.

• It explodes as a supernova.

• It becomes a neutron star.

• It forms a black hole.

What is a supernova?

• A massive explosion that occurs when a star acquires too much matter or when nuclear fusion stops.

• The initial stage of a star's life cycle.

• A compact star that does not undergo nuclear fusion.

• A stage in the life cycle of a low-mass star.

What can the remnants of a supernova form?

• Neutron stars or black holes

• White dwarfs

• Red giants

• Protostars