Absorption Line Strengths Are Used in the Spectral Classification of Stars

question 14

Multiple Choice

Absorption line strengths are used in the spectral classification of stars and the determination of surface temperatures. Which of these atomic or molecular constituents exhibits strong absorption lines in spectra from stars with very high surface temperature?

• A) H
• B) Ca II
• C) He II
• D) TiO

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Definitions:

Marginal Productivities

The additional output that is produced by using one more unit of a particular input, ceteris paribus.

Earnings Alteration

Changes or modifications to the amount of money earned by an individual or company.

Rental Price

The amount of money paid periodically for the use of an asset, property, or piece of equipment.

Marginal Product

The additional output generated by employing one more unit of a particular input, holding all other inputs constant.