Sound Waves Are Alternating Regions of Compression and Decompression of Molecules

question 194

Multiple Choice

Sound waves are alternating regions of compression and decompression of molecules (i.e., molecules crowd together and spread apart) . The pitch of a sound depends on the _____ _{of the sound} wave and sound intensity on the _____.

• A)amplitude; frequency
• B)frequency; wavelength
• C)frequency; amplitude
• D)wavelength; amplitude
• E)velocity; amplitude

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Definitions:

Balance of Trade

The difference between the monetary value of a nation's exports and imports over a certain period. A positive balance means more goods were exported than imported, and vice versa.

World Trade Organization

An international body that deals with the rules of trade between nations, aiming to ensure trade flows as smoothly and predictably as possible.

Multilateral Forum

A platform where three or more countries engage in dialogue and collaboration on issues of common interest.

Quotas

Limits set by governments on the amount of a specific good that can be imported or exported within a certain timeframe.