What Observed Feature of the Milky Way Is Better Explained

question 54

Multiple Choice

What observed feature of the Milky Way is better explained by the bottom-up hypothesis of galactic formation, as opposed to the monolithic collapse model?

• A) The elongated shape of the central bulge of the galaxy
• B) The different metallicities of the bulge and disk of the galaxy
• C) The difference in age of globular clusters
• D) The supermassive black hole found at center of the galaxy
• E) The very little gas or dust that halo contains

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Definitions:

Young-Helmholtz Theory

A theory of color and how the human eye perceives color through the processing of different wavelengths by three types of color receptors (cones) sensitive to red, green, and blue.

Television Image

A visual representation produced on a screen by a television system.

Visual Images

Representations of objects or scenes that are perceived with the eyes or created in the mind.

Achromatic Color

Colors without hue, including black, white, and all shades of gray, referring to colors that do not contain a chromatic component.