The Center of Our Galaxy Contains a Very Intense Source

question 26

Multiple Choice

The center of our galaxy contains a very intense source of radio and X-ray radiation named Sgr A*. What is it about this source that supports the idea that the radiation comes from a black hole?

• A) The radiation is strongly blueshifted, indicating that the object is collapsing.
• B) The radiation is strongly redshifted indicating that the object is growing.
• C) The radiation is coming from an incredibly small object.
• D) Radio waves can only be produced by matter orbiting a black hole.
• E) Only radiation from a black hole could penetrate the giant molecular clouds between Sgr A* and Earth.

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Definitions:

Words Are Arbitrary

The concept that the meanings attached to words are not inherently linked to their phonetic expressions but are agreed upon by users of the language.

Static Evaluation

Viewing people or situations as unchanging, and failing to recognize that change occurs over time.

Open-Ended Questions

Questions designed to encourage a full, meaningful answer using the respondent's own knowledge and/or feelings, unlike yes/no questions.

Nonverbal Messages

Information or emotional content communicated without the use of spoken words, often through body language, facial expressions, and tone of voice.