Multiple Choice
What happens when a star exhausts its core hydrogen supply?
A) Its core contracts,but its outer layers expand and the star becomes bigger and brighter.
B) It contracts,becoming smaller and dimmer.
C) It contracts,becoming hotter and brighter.
D) It expands,becoming bigger but dimmer.
E) Its core contracts,but its outer layers expand and the star becomes bigger but cooler and therefore remains at the same brightness.
Correct Answer:
Verified
Correct Answer:
Verified
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