Main Sequence Stars: Scavenger Hunt

What is the main process that main sequence stars use to produce energy?

• Nuclear fission

• Hydrogen fusion

• Carbon fusion

• Helium fusion

What is the estimated total lifetime of our Sun as a main sequence star?

• 5 billion years

• 100 billion years

• 20 million years

• 10 billion years

What type of star is our Sun classified as?

• Blue supergiant

• G-type yellow dwarf

• White dwarf

• Red giant

What is the color of stars that are more massive and hotter?

• Red

• Yellow

• Green

• Blue

What is the next stage in the life cycle of a main sequence star after it leaves the main sequence?

• Supernova explosion

• Collapse into a white dwarf

• Expansion into a red giant

• Formation of a black hole

What is the fate of stars smaller than a quarter of the mass of the Sun?

• Expansion into a red giant

• Collapse into a black hole

• Formation of a neutron star

• Collapse into a white dwarf

What is the estimated age of the universe?

• 5 billion years

• 13.8 billion years

• 20 million years

• 10 billion years

What is the reason red dwarfs are considered to be good sources for planets hosting life?

• They are massive stars

• They have long lifetimes

• They are blue supergiants

• They have high luminosity