What Do the Broad Emission Lines in Quasar Spectra Tell

question 9

Multiple Choice

What do the broad emission lines in quasar spectra tell astronomers about these objects?

• A) They are very far away.
• B) They are moving away from us.
• C) They have rapid internal motions.
• D) They are very dense.

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Definitions:

Self-identity

An individual's conception and expression of their own individuality or group affiliations (such as national identity or cultural identity).

Social Class

A division of society based on social and economic status, influencing individuals' opportunities, lifestyles, attitudes, and behavior.

Tabula Rasa

A philosophical theory that suggests individuals are born without built-in mental content, and all knowledge comes from experience or perception.

Adaptive Personalities

Traits in individuals that enhance their ability to cope with changes and challenges in their environment.