The Extinction of Starlight Due to the Interstellar Medium

question 53

Multiple Choice

The extinction of starlight due to the interstellar medium
I. is the greatest in the ultraviolet.
II. is the greatest in the infrared.
III. is caused by ionized hydrogen.
IV. is caused by dust particles.

• A) I,III
• B) II III
• C) I, IV
• D) II IV
• E) only IV

---

Definitions:

Conceptual Skills

The ability to understand complex ideas and concepts, often used to solve problems and make strategic decisions.

Supervisory Skills

A set of skills essential for overseeing the work of others, including leadership, communication, problem-solving, and delegation.

Interpersonal Skills

Abilities used by individuals to interact effectively and harmoniously with other people, including communication, empathy, and conflict resolution skills.

Conceptual

Related to or based on mental concepts; often used in contrast with practical, empirical, or physical.