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NIFE WEATHER EXAM PRACTICE QUESTIONS AND ANSWERS

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NIFE WEATHER EXAM PRACTICE QUESTIONS AND ANSWERS What are the percentages of gases in pure, dry air? - ANSWER-78% nitrogen 21% oxygen 1% other gases What percent is water vapor in the atmosphere? - ANSWER-0-5% by volume What is the troposphere? - ANSWER-Layer adjacent to the Earth's surface ...

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  • November 4, 2024
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NIFE WEATHER EXAM PRACTICE

QUESTIONS AND ANSWERS


What are the percentages of gases in pure, dry air? - ANSWER✔✔-78% nitrogen


21% oxygen


1% other gases


What percent is water vapor in the atmosphere? - ANSWER✔✔-0-5% by volume


What is the troposphere? - ANSWER✔✔-Layer adjacent to the Earth's surface


Where does all weather occur? - ANSWER✔✔-Troposphere


In the troposhpere, what happens to the temperature with an increase in altitude? - ANSWER✔✔-

Temperature decreases


What are the winds like in the troposphere? - ANSWER✔✔-Winds are light near the Earths surface and

increase with altitude


Where is the troposphere? (height) - ANSWER✔✔-Average height of 36000 MSL




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What is the moisture content in the troposphere? - ANSWER✔✔-Large amounts of moisture and

condensation


Is the troposphere higher in the summer or in the winter? - ANSWER✔✔-Higher in the summer. Think

that the air is heating up and rising the troposphere


What is the tropopause? - ANSWER✔✔-Transition zone between the troposphere and stratosphere


What happens to temperature with an increase in altitude in the tropopause? Decrease? - ANSWER✔✔-

Constant


Constant


Where do the strongest winds occur? - ANSWER✔✔-In the tropopause


What is atmospheric pressure? What is atmospheric pressure also known as? - ANSWER✔✔-Pressure

exerted on a surface by the atmosphere due to the weight of the column of air directly above that

surface


As altitude increases, what happens to pressure? - ANSWER✔✔-Decreases always


What are the two standard units of pressure? - ANSWER✔✔-Inches of mercury (in-Hg)


Millibars (mb)


What is station pressure? - ANSWER✔✔-Atmospheric pressure measured directly at an airfield




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Which is greater, station pressure or sea level pressure? - ANSWER✔✔-Station pressure...... stations

wont be in the sea


What is Sea Level Pressure? - ANSWER✔✔-Pressure that would be measured if the station was at MSL


How do stations report pressure regardless of location? - ANSWER✔✔-In Sea Level Pressure


What is Atmospheric circulation? - ANSWER✔✔-Earth is constantly heated and cooled as it rotates. This

causes ascending and descending air


What are the two ways atmospheric circulation moves air? - ANSWER✔✔-Ascending and descending

currents


What causes Atmospheric circulation? - ANSWER✔✔-Wind trying to go from high pressure to low

pressure. Due to the Coriolis Force


What are Pressure Gradients? - ANSWER✔✔-Spacing of isobars that represent a change in pressure over

a horizontal distance.


When is a Pressure Gradient Force (PGF) strong? - ANSWER✔✔-When isobars are close together


What is the initiating force for all winds? - ANSWER✔✔-Pressure Gradient Force


What pressure gradient force is associated with slower winds? - ANSWER✔✔-Wide spaced PGF


What is standard atmosphere? - ANSWER✔✔-Standard day at sea level conditions




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