Open Clusters Are Not

question 149

Multiple Choice

Open clusters are not:

• A) gravitationally bound.
• B) the result of star formation within a single giant molecular cloud.
• C) associated with solo stars like our Sun.
• D) known to contain more than about a hundred stars.

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Definitions:

Psychosocial Development

A framework by Erik Erikson that describes eight stages of human development, each characterized by a different psychological crisis that needs resolution.

Cohort

A cohort is a group of individuals who share a common characteristic or experience within a defined period, often studied to identify statistical correlations in longitudinal research.

Psychosexual Development

A theory by Sigmund Freud that proposes individual psychological development is driven by a series of stages centered on erogenous zones.

Anal Stage

A phase in Freud's psychosexual development theory occurring in early childhood, where pleasure centers on controlling bladder and bowel movements.