A Protostar's Evolutionary "Track" in the H-R Diagram Traces

question 12

Multiple Choice

A protostar's evolutionary "track" in the H-R diagram traces

• A) only how the protostar's radius changes with time.
• B) how the protostar's luminosity, temperature, and radius change with time.
• C) only how the protostar's luminosity changes with time.
• D) only how the protostar's spectral type changes with time.
• E) the protostar's location in the molecular cloud.

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Definitions:

Simple Reflexes

Inborn automatic responses to certain stimuli that are present from birth, such as the sucking reflex in infants.

Mental Representations

Internal cognitive symbols that represent external reality, allowing individuals to process information and make sense of the world.

Primary Circular Reactions

Repetitive actions focused on the body that infants engage in by chance and then continue because they find them pleasurable, marking a stage in sensorimotor development.

Assimilation

The process by which individuals or groups absorb the cultural aspects of another, often the dominant, society.