Hertzsprung-Russell Diagram Blue or blue w White Vellow Red orange Red Rioe Supergl Beteigeuse Main Sequene Aldebaran Glants Sum Alpho Centoun Sinus B White Dwarfs 5,000 10,000 Surface Temperature ("C) 50,000 20,000 6,000 3,000 Most of the stars shown on the diagram are classified as which type of st O white dwarf O main sequence O red giant O super giant Brightness 00/

List the following 5 terms in order through a stars life cycle (starting with the sun), through the remainder of its lifetime: a. Black dwarf b. Planetary nebula c. Red giant d. Star (Sun) e. White dwarf

Which statement is most logical?  a First stars are thought to have been more massive than Sun because the materials used to make clouds were more abundant at the beginning  b First stars are thought to have been more massive than Sun because the temperatures of the clouds that made them were higher because they consisted entirely of hydrogen and helium  c First stars are thought to have been more massive than Sun because star-forming clouds were much denser early in time  d First stars are thought to have been more massive than Sun because the clouds that made them were much more massive

In the star clusters shown, which one is younger and why?

Why are red dwarfs very dim.