The layer in a variable that star that is responsible for alternately absorbing and releasing the energy flowing from the center of the star is made up of
A) fusing hydrogen.
B) molecules of metal oxides.
C) fusing helium.
D) partially ionized helium.

Question

Quizplus · Accepted Answer

The layer responsible for alternately absorbing and releasing energy in a variable star is made up of partially ionized helium. This process contributes to the pulsation and variability of the star's brightness.

The Layer in a Variable That Star That Is Responsible