When a Star Leaves the Main Sequence and Expands Toward

question 107

Multiple Choice

When a star leaves the main sequence and expands toward the red-giant region,what is happening inside the star?

• A) Hydrogen burning is taking place in a spherical shell just outside the core;the core itself is almost pure helium.
• B) Hydrogen burning is taking place in a spherical shell just outside the core;the core has not yet started thermonuclear reactions and is still mostly hydrogen.
• C) Helium burning is taking place in a spherical shell just outside the core;the core itself is almost pure carbon and oxygen.
• D) Helium is being converted into carbon and oxygen in the core.

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Definitions:

Linguistic Determinism

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Linguistic Relativism

Language reflects how we perceive the world.

Cultural Universals

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Incest Taboo

A cultural norm and regulation that prohibits sexual relations between close relatives.