Suppose You Read Somewhere That 10 Percent of the Matter

question 44

Multiple Choice

Suppose you read somewhere that 10 percent of the matter in the Milky Way is in the form of dust grains.Should you be surprised? If so,why?

• A)There is nothing surprising about 10 percent of the matter being dust grains because dust grains are the material from which stars are born.
• B)Given how easily dust grains form,10 percent is a surprisingly low fraction of material to be in that form.
• C)Ten percent is surprisingly high because dust grains can form only at low temperatures.
• D)The 10 percent figure cannot be correct,because dust grains are solid but only about 2 percent of the matter in our galaxy is made of anything besides hydrogen and helium.

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Definitions:

Pollution

The presence of contaminants in the natural environment that cause harm or discomfort to organisms and ecosystems.

Utility Function

A mathematical representation in economics of how a person ranks different bundles of goods according to their level of happiness or satisfaction.

Consumption Bundle

The collection of all the goods and services consumed by a given individual.

Satisfaction

The feeling of pleasure or contentment resulting from achieving one's goals or meeting one's needs and desires.