What Is the Primary Visible Color of an Emission Nebula

question 46

Multiple Choice

What is the primary visible color of an emission nebula?

• A) red due to the Ha line of hydrogen
• B) black, because of dust
• C) blue due to ionized helium atoms
• D) blue from the scattering of light off the tiny molecules
• E) red because of reddening by dust

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Definitions:

Generally Accepted Accounting Principles

A set of accounting standards and practices that are used in a jurisdiction to ensure transparency, uniformity, and fairness in financial reporting.

International Financial Reporting Standards

A set of accounting standards developed by the International Accounting Standards Board, used globally to prepare public company financial statements.

Profitability Ratios

A group of ratios that show the combined effects of liquidity, asset management, and debt on operations.

Liquidity

The ease with which an asset can be converted into cash without affecting its market price.