When Astronomers Look for Evidence of Hydrogen Gas in the Spectra

question 82

Multiple Choice

When astronomers look for evidence of hydrogen gas in the spectra of the Sun,the planets,and nearby stars,the positions of the spectral features or "lines" due to hydrogen

• A) are in a very different pattern,depending on the location of the planet or star,and are reproduced only with difficulty in the laboratory.
• B) are always in the same pattern,characteristic of hydrogen gas,as seen in the laboratory.
• C) change systematically,depending on the distance from the source,starting with a laboratory pattern.
• D) are in the same pattern for solar and planetary sources but are very different for stars at larger distances because of absorption of light by the interstellar matter.

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Definitions:

Dominator

An entity or individual that exercises control or exert supremacy over others in a commanding or dominating manner.

Modeled Behavior

Actions displayed by an individual that serve as a reference for others, potentially influencing their behavior through observation and imitation.

Using Praise

The act of expressing approval or admiration to encourage or reinforce positive behavior or achievements.

Asking Observer

An individual who gathers information by asking questions or seeking insights, often in a learning or investigatory context.