What is the most important quantity on which the lifetime of a star depends?
A)temperature of the star's corona
B)abundance of heavy elements in the star
C)star's speed of rotation
D)mass of the star

Question

Quizplus · Accepted Answer

The mass of a star is the most important quantity on which its lifetime depends. This is because a star's mass determines its core temperature and pressure, which in turn governs the rate of nuclear fusion reactions that power the star. The more massive a star, the higher its core temperature and pressure, and the faster its fusion reactions, which results in a shorter lifespan. Conversely, less massive stars have lower core temperatures and pressures, and fusion reactions occur more slowly, leading to longer lifetimes.

What Is the Most Important Quantity on Which the Lifetime