THE NIGHT SKY

What determines the changes a star goes through?

• Its color
• Its age
• Its mass
• Its distance from other stars

What is our nearest star?

• The Sun
• Sirius
• Alpha Centauri
• Betelgeuse

How does the life cycle of a high mass star differ from that of a low mass star?

• High mass stars do not undergo a supernova explosion
• High mass stars do not go through a red supergiant phase
• High mass stars do not expand and cool at the end of their main sequence phase
• High mass stars do not form black holes or neutron stars

What is the Sun composed mostly of?

• Carbon and nitrogen
• Oxygen and nitrogen
• Hydrogen and helium
• Nitrogen and oxygen

What are the stages of a high mass star's life cycle?

• Main sequence, red giant, white dwarf
• Main sequence, red supergiant, white dwarf
• Main sequence, red dwarf, supernova, black hole or neutron star
• Main sequence, red supergiant, supernova, black hole or neutron star

What happens to small stars like the Sun at the end of their lives?

• They become a black dwarf
• They become a black hole
• They become a supernova
• They become a neutron star

What is the end result of a high mass star's life cycle?

• White dwarf
• Red supergiant star
• Black hole
• Neutron star

What is the Orion Nebula?

• A stellar nursery
• A galaxy
• A blue supergiant star
• A red supergiant star

Why does the Sun appear larger and brighter than other stars?

• Because it is closer to us than other stars
• Because it emits more light than other stars
• Because it is more massive than other stars
• Because it is a yellow dwarf star

How many stars are estimated to be in the Milky Way?

• 1 billion
• 1 trillion
• 100 thousand million
• 10 million