The Distinct Blue Color of the Nebulosity Around Stars in Young

question 211

Multiple Choice

The distinct blue color of the nebulosity around stars in young clusters such as the Pleiades (see Figure 11-2,Comins Discovering the Essential Universe,6th ed.) is caused by:

• A) atoms of gas emitting light by fluorescence, having been excited by ultraviolet radiation from hot stars.
• B) light emitted by interstellar gases but Doppler-shifted by motion toward the observer.
• C) starlight reflected by blue-colored interstellar material.
• D) starlight scattered and reflected by small dust grains in the interstellar material.

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Definitions:

Capital Investment

Funds used by a company to acquire, upgrade, and maintain physical assets such as property, industrial buildings, or equipment.

Mutual Agency

A principle in partnership where each partner has the authority to bind the partnership in contracts and agreements, affecting all partners.

Articles of Partnership

A document that formalizes an agreement between parties to enter into a business partnership, outlining the rights, responsibilities, and capital contributions of each partner.

Profit and Loss Ratio

Typically refers to the profit margin, which measures the efficiency of a company in generating profits from its operations, calculated as net income divided by revenue.