A Small Thunderstorm Cloud with Virga Falling Out of Its

question 16

Multiple Choice

A small thunderstorm cloud with virga falling out of its base and blowing dust at the ground could warn of a severe hazard to an airplane because ____.

• A)this could be the first indication of a tornado
• B)it is likely that hail will soon begin to fall
• C)this could indicate an intense downdraft or microburst
• D)the airplane could be struck by lightning
• E)a hurricane is close by

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Definitions:

ATC Curve

The Average Total Cost curve graphically represents the total cost per unit of output produced, calculated by dividing the total cost by the quantity of output.

Economic Profits

The total revenue of a business minus its explicit and implicit costs; it’s a measure of excess above the normal levels of profits businesses earn in a competitive environment.

Long-Run Equilibrium

A state in which supply equals demand, all firms are maximizing profits, and there is no incentive for market entry or exit.

Efficient Output

The level of production at which a firm or economy can produce the maximum amount of goods at the lowest possible cost.