How Does the Interstellar Medium Affect Our View of Most

question 68

Multiple Choice

How does the interstellar medium affect our view of most of the galaxy?

• A)It absorbs all wavelengths of light.
• B)It prevents us from seeing most of the galactic disk with visible and ultraviolet light.
• C)It produces so much visible light that it blocks our view of anything beyond it.
• D)It has no effect on visible- light observations, but prevents us from studying the galactic center with radio waves or X- rays.

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Definitions:

Sales Tax

A tax imposed by a government on sales of goods and services, typically calculated as a percentage of the purchase price.

Constant Rate

A stable speed or frequency at which something happens or changes over a particular period of time.

Constant-Rate

Pertaining to a process or quantity that changes over time at an unvarying speed or amount.

Progressive Tax

A tax system where the tax rate increases as the taxable amount increases, placing a heavier burden on wealthier taxpayers.