The Type II Tail of a Comet Shows a Spectrum

question 38

Multiple Choice

The type II tail of a comet shows a spectrum of absorption lines on a bright background (like the Sun's spectrum) .From this,one can conclude that the tail contains

• A) dust.
• B) thin gas.
• C) no atoms at all,just empty space.
• D) the spectrum does not tell which of the above is true.

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Definitions:

Dealership

A business authorized to sell a particular manufacturer's products, commonly used in the context of car sales.

Commission Rate

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Government payments made to individuals who have lost their job and meet certain eligibility requirements.

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Decorated with needlework, often with colorful threads, to create designs or patterns on fabric.