The Lower Edge of the Main-Sequence Band Represents the Location

question 54

Multiple Choice

The lower edge of the main-sequence band represents the location in the H-R diagram at which stars begin their lives as main-sequence stars.What is it called?

• A)the zero-age main sequence
• B)the birth line
• C)the Coulomb barrier
• D)the evolutionary track

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Definitions:

Submission

The action of accepting or yielding to a superior force or to the will or authority of another person.

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An uncomfortable sensation that can range from mild, localized discomfort to unbearable agony, either physical or emotional.

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A form of sexual desire in which gratification is linked to an abnormal degree to a particular object, item of clothing, or body part.

Arousal

A physiological and psychological state of being awake or reactive to stimuli.