In a Cepheid Variable, What Happens to Make the Temperature

question 4

Multiple Choice

In a Cepheid variable, what happens to make the temperature decrease?

• A) Massive solar flares release great amounts of energy, after which the star goes through a partial collapse.
• B) Hydrogen fusion in the shell begins to shut down because it is running low on fuel.
• C) A periodic eruption of sunspots blocks the radiation from below.
• D) The ionized helium layer expands and cools.

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Definitions:

Condition Subsequent

A condition in a contract that, if it occurs, terminates the party's obligation or alters the terms of the agreement.

Rescission

Rescission is the legal act of unmaking or terminating a contract, returning the parties involved to their positions prior to the contract's existence.

Restitution

The return of any property given up under a contract.

Absolute Obligation

A duty or responsibility that is not subject to any conditions and must be fulfilled under all circumstances.