Stellar Evolution & Explosions

High-mass stars burn hotter & brighter because they have more _______ at their cores.

When temperatures are high enough in the core of a high-mass star, this element starts to form.

When an ______ core is reached in a high-mass star, gravity takes over.

When an iron core is reached gravity takes over and a(n) _________ occurs.

Supernovas are one of the largest _______ in the Universe.

All elements heavier than carbon were formed in supernova explosions.

_____ stars evolve and move off the main-sequence first; then intermediate stars & so on.

The dividing line between high & low-mass stellar evolution is called the

Close binary star systems that share stellar material can affect how each star _____.(check all that apply)

Term for "new star" that occurs in mass-transfer binary and/or white dwarf companion stars.

As material is added to the accretion disk, _____ may reach a temporary fusion point.

Contact binaries may allow a white dwarf star to repeatedly

A supernova occurs when a _____ star runs out of fuel (or overloads) and explodes. (check all that apply)

A ____ star with a mass of 1.4 suns may go supernova (I) if too much material accretes.

Type II supernovae occur when a star with at least ____ times the mass of our sun explodes.

Supernovae regularly occur in galaxies throughout the visible Universe.

Type II supernovae explosions may leave behind a (check all that apply)

_____ are rapidly spinning neutron stars that are known as "lighthouses" in space.

We can see black holes because