What Is Characteristic of a Thermal Inversion

question 112

Multiple Choice

What is characteristic of a thermal inversion? 

• A) Thermal inversions last only a few minutes to a few hours. 
• B) Thermal inversions exacerbate pollution problems. 
• C) Thermal inversion occurs when a layer of cold air prevents warm air from rising. 
• D) Normally, cool air near the Earth's surface expands and rises, carrying pollutants higher into the troposphere.

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Definitions:

John Maynard Keynes

A British economist whose ideas fundamentally changed the theory and practice of macroeconomics and economic policies of governments, best known for Keynesian economics.

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The situation in an economy where all who are willing and able to work at prevailing wage rates are employed, with no involuntary unemployment.

Discretionary Fiscal Policy

Involves the use of government spending and tax policies to influence the economy, based on current economic conditions and objectives.