Intergalactic Hydrogen Clouds Are Easiest to Study by Looking at

question 15

Multiple Choice

Intergalactic hydrogen clouds are easiest to study by looking at

• A)21 cm radio emission.
• B)radio emission from molecular hydrogen.
• C)X-ray emission.
• D)absorption lines in quasar spectra.

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Definitions:

Id Impulses

Id impulses refer to the innate and primitive desires and urges, often sexual or aggressive in nature, that stem from the id part of the personality in Freudian psychology.

Superego

According to Freud, the psychological force that represents a person’s values and ideals.

Ego Defenses

Psychological strategies employed by the ego to manage anxiety, conflict, and internal or external stressors.

Id Impulses

Instinctual drives and desires, often unconscious, that form part of Freud's structural model of the psyche, seeking immediate satisfaction according to the pleasure principle.