The Mass of Visible Matter in a Galaxy Can Be

question 40

Multiple Choice

The mass of visible matter in a galaxy can be estimated by measuring its luminosity. When this is compared with the measured mass of the galaxy, astronomers find that ____.

• A) the measured mass is about ten times the estimated mass, due to the effects of the central black hole
• B) the measured mass is approximately equal to the estimated mass
• C) there is no clear relationship between the estimated and measured mass
• D) the measured mass is about ten times the estimated mass, due to the effects of dark matter
• E) the estimated mass is about ten times the measured mass, due to the effects of dark matter

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Definitions:

Obstacles

Challenges or barriers that hinder progress or the achievement of objectives, requiring effort and strategies to overcome.

Level of Readiness

The degree to which an individual or group is prepared to take action or embark on a new task.

Minors

Individuals under the legal age of adulthood, whose care and decisions are often subject to parental, guardian, or court oversight.

Negative Behavior

Actions or conduct that are harmful, destructive, or socially unacceptable, often hindering personal or group progress and well-being.