Gas Fills All the Space Available to It

question 19

Multiple Choice

Gas fills all the space available to it. Why then doesn't the atmosphere go off into space?

• A)It does, but the rate is so slow that our atmosphere will remain for millions of years.
• B)The atmosphere is held down by gravity.
• C)The rate at which air molecule escape into space is about equal to the rate that they are produced by various mechanisms, such as volcanic activity and photosynthesis.
• D)There are molecular attractions between air molecules and the earth's surface.

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Definitions:

Peso

The currency used by several countries in Latin America, as well as the Philippines.

Hotel Room

A single unit of accommodation in a hotel, typically including a bed and bathroom, offered to guests for temporary stays.

Net Capital Outflows

The difference between the domestic money invested abroad and the foreign investment within a country over a specific period, indicating the flow of capital across borders.

Net Exports

The value of a country's exports minus its imports, which is a component of a country's gross domestic product.