• Q
3 As a star runs out of hydrogen in its core,
as seen from the OUTSIDE the star
•a.becomes hotter and more
luminous.
•b.becomes cooler and more luminous.
•c.becomes hotter and
less luminous.
•d.becomes cooler and
less luminous.e.becomes larger in radius and hotter.
•Yes,
this is the star turning into a RED GIANT!
•