The Density of Interstellar Dust Is Very Low, Yet It

question 61

Multiple Choice

The density of interstellar dust is very low, yet it still blocks starlight because

• A) it is so cold it absorbs higher energy photons.
• B) the dust particles are irregular in shape.
• C) there is 100 times more opaque gas than dust present in the interstellar medium.
• D) ice particles reflect all light back toward their stars, not toward us.
• E) the dust particles are about the same size as the light waves they absorb.

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Definitions:

Prevailing Yield

The current return rate on an investment, typically referring to bonds or other fixed-income securities.

Simple Interest

Interest calculated only on the principal amount, or the initial sum of money invested or borrowed, without compounding.

Convert Communicator

This term refers to an individual who adopts new beliefs or practices and then acts to persuade others to adopt these new beliefs or practices as well.

Previously Held Attitudes

Beliefs or opinions that an individual had before being exposed to new information or experiences.