When a star depletes its core supply of hydrogen,__________ dominates in the core and __________ dominates in the atmosphere.

Question

Quizplus · Accepted Answer

When a star depletes its core supply of hydrogen, gravity dominates in the core as it begins to collapse due to the lack of outward pressure from nuclear fusion. In the outer atmosphere, however, the decrease in pressure causes the gas to expand and cool, allowing gravity to dominate and for the gas to fall inward. This creates a shell where hydrogen fusion can continue, powering the star and preventing it from collapsing further.

When a Star Depletes Its Core Supply of Hydrogen,__________ Dominates