Star Death and Radio Interferometry Review

Stars form from

• Other stars colliding

• Other stars exploding

• Collapsing gas clouds

• Collapsing dust clouds

What is the last fusion product any star can produce?

• Oxygen

• Helium

• Iron

• Europium

What determines how long a star will live?

• Its chemical composition

• Its mass

• Its surface temperature

• Its size

What determines how many different fusion products a star will eventually produce?

• Its chemical composition

• Its mass

• Its surface temperature

• Its size

True or false: large stars live longer than small stars.

• True

• False

True or false: large stars make more different elements than small stars.

• True

• False

Roughly what proportion of stars will end up as white dwarfs when they die?

• 50%

• 75%

• 85%

• 97%

The very heaviest stars will become what when they die?

• White dwarf

• Black hole

• Neutron star

• Quasar

What has to happen before a star can become a neutron star or black hole?

• Type I supernova

• Type II supernova

• Nova

• Accretion

Which of these requires a binary system (2 stars orbiting each other) to occur?

• Creation of a white dwarf

• Type I supernova

• Type II supernova

• Creation of a planetary nebula