What Is the Primary Visible Color of an Emission Nebula

question 15

Multiple Choice

What is the primary visible color of an emission nebula?

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

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Definitions:

Keynesian Analysis

An economic theory proposing that government intervention can help stabilize the economy through spending and tax policies.

Aggregate Demand

The total demand for all goods and services in an economy at different price levels, within a given time period.

Tax Cuts

Reduction in tax rates intended to stimulate economic activity or achieve other policy goals.

Government Purchases

Spending on goods and services by local, state, and federal governments