A star in the instability strip of the H-R diagram would A) ...

[K@]

A star in the instability strip of the H-R diagram would
 
  A) explode as a Type I supernova.
  B) vary in both temperature and radius.
  C) vary in temperature and radius, but not in brightness.
  D) vary in brightness with an irregular pattern.
  E) vary in temperature and brightness, but not in radius.

Question 2

In the M class stars, we find ________ absorption lines not seen in hotter stars.
 
  Fill in the blank(s) with correct word

[ky860224]

Answer to Question 1

B

Answer to Question 2

molecular