Which of these mechanisms is thought to be ineffective and inefficient in the triggering of star birth in molecular clouds?

Question

Quizplus · Accepted Answer

Gravitational contraction of a hot gas cloud is considered ineffective and inefficient for triggering star birth in molecular clouds because hot gas has a tendency to expand rather than contract. For star formation to occur, the gas needs to cool and contract under gravity, which is less likely in a hot gas cloud scenario.

Which of These Mechanisms Is Thought to Be Ineffective and Inefficient