In the Self-Propagating Star Formation Theory

question 129

Multiple Choice

In the self-propagating star formation theory

• A) spiral arms are formed and sustained primarily by the actions of solar-mass stars because there are so many more of them than there are high-mass stars.
• B) spiral arms are poorly defined because they are formed and sustained primarily by the actions of short-lived massive stars.
• C) the passage of dust clouds through the spiral arms triggers star formation.
• D) spiral structure results with thin, well-defined arms.

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Definitions:

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Social Category

A classification of people based on shared socio-cultural traits, like age, gender, or ethnic background.

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