Star Life Cycle Quiz

What is the earliest stage in a star's life?

• Nebula

• Protostar

• Supernova

• Black hole

What process occurs when a protostar becomes dense enough for its atoms to fuse?

• Nuclear fission

• Nuclear fusion

• Chemical reaction

• Combustion

What are nebulas primarily composed of?

• Water and ice

• Gas and dust

• Rocks and minerals

• Light and heat

How do stars begin their life cycle?

• As a black hole

• As a supernova

• As a solar nebula

• As a white dwarf

What happens during nuclear fusion in a star?

• Helium is split into hydrogen

• Hydrogen is combined into helium

• Oxygen is turned into carbon

• Carbon is converted into nitrogen

What determines a star's lifespan?

• Its color

• Its mass

• Its temperature

• Its distance from Earth

How long is the lifespan of Earth's sun?

• 5 billion years

• 10 million years

• 10 billion years

• 4.6 billion years

What happens to a star when it runs out of fuel?

• It becomes a planet

• It becomes a red giant or supergiant

• It explodes immediately

• It turns into a comet

What is the final stage of a low or medium mass star like our sun?

• Black hole

• Neutron star

• White dwarf

• Red supergiant

What does the diagram illustrate about the lifecycle of a star?

• The process of star formation

• The different stages a star goes through

• The chemical composition of stars

• The distance of stars from Earth