Understanding the Cosmos: Stars and Galaxies

What term is used to describe the first generation of stars based on their metallicity?

• Population Four

• Population Three

• Population Two

• Population One

What does the presence of heavy elements in a star indicate about its age?

• Age cannot be determined

• It is older

• It is younger

• It is middle-aged

Which type of star system is more common for high-mass stars?

• Single star systems

• Binary systems

• Triple star systems

• Star clusters

What is the Chandrasekhar limit related to?

• The brightness of a star

• The size of a galaxy

• The distance between stars

• The maximum mass of a white dwarf

What type of galaxy is characterized by a smooth appearance without distinct features?

• Barred spiral galaxy

• Irregular galaxy

• Elliptical galaxy

• Spiral galaxy

Which type of galaxy contains a mixture of Population One and Population Two stars?

• Elliptical galaxies

• Lenticular galaxies

• Spiral galaxies

• Irregular galaxies

What is at the center of a quasar?

• A neutron star

• A white dwarf

• A large star cluster

• A supermassive black hole

What role do supermassive black holes play in galaxies?

• They are not present in most galaxies

• They exist at the galactic centers

• They are found only in elliptical galaxies

• They form the outer arms of spiral galaxies

What phenomenon is likely responsible for the formation of elliptical galaxies?

• Dark matter accumulation

• Starburst activity

• Stellar evolution

• Galactic cannibalism

How do galaxies typically evolve over time?

• They remain static

• They decrease in size

• They split into smaller galaxies

• They merge and grow larger