Why Is It Surprising That Spiral Arms Are Stable Structures

question 6

Multiple Choice

Why is it surprising that spiral arms are stable structures, lasting billions of years?

• A) Differential rotation should tear the arms apart.
• B) Gas and dust clouds should run out of material to make young stars.
• C) Supernova explosions should disrupt the arms.
• D) Globular clusters are continuously passing through the arms.
• E) Gravity should pull the arms down into the center of the galaxy.

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Definitions:

Expected Gender Roles

Social norms dictating the expected behaviors, traits, and responsibilities assigned to individuals based on their gender.

Symbolic Interactionism

A sociological perspective focusing on the ways in which people create meaning through their social interactions.

Theoretical Perspective

A specific viewpoint or set of assumptions that guides researchers in their studies of human behaviors and societal structures.

Gender

A social construct that involves roles, behaviors, activities, and attributes that a given society considers appropriate for men and women.