We Can Learn a Lot About the Properties of a Star

question 132

Multiple Choice

We can learn a lot about the properties of a star by studying its spectrum.All of the following statements are true except one.Which one?

• A)The peak of the star's thermal emission tells us its temperature: Hotter stars peak at shorter (bluer)wavelengths.
• B)The total amount of light in the spectrum tells us the star's radius.
• C)We can identify chemical elements present in the star by recognizing patterns of spectral lines that correspond to particular chemicals.
• D)We can look at Doppler shifts of spectral lines to determine the star's speed toward or away from us.

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Definitions:

Two-Tiered System

A system or structure that has two distinct levels of operation, authority, or importance.

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A form of arbitration that allows a group of individuals with similar legal claims to arbitrate their disputes collectively rather than individually.

Federal Arbitration Act

U.S. federal law that provides the legal foundation for the enforcement of arbitration agreements and governs the conduct of arbitration proceedings.

Summary Jury Trial

A shortened trial that serves as an alternative dispute resolution method, involving a jury which listens to a summary of the case and renders an advisory verdict.