After It Leaves the Main Sequence, a Star of More

question 65

Multiple Choice

After it leaves the main sequence, a star of more than 1 solar mass moves generally to the right on the H-R diagram because the star's

• A) surface temperature is increasing while its radius is decreasing.
• B) surface temperature is decreasing while its radius is increasing.
• C) core is expanding while its outer layers are contracting.
• D) core is expanding, causing its outer layers to expand as well.

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Definitions:

Unconditioned Stimulus

In classical conditioning, a stimulus that naturally and automatically triggers a response without the need for prior learning.

Conditioned Response

A learned reaction to a specific stimulus as a result of repeated exposure, often studied in the context of classical conditioning.

Unconditioned Stimulus

A stimulus that naturally and automatically triggers a response without any prior learning.

Unconditioned Response

The natural, reflexive response elicited by an unconditioned stimulus without prior learning or conditioning.