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What is the primary gas in the atmosphere that supports combustion in aircraft engines?
✔✔ Oxygen
Which atmospheric layer is most important for commercial jet flight operations?
✔✔ Troposphere
What happens to air pressure as altitude increases?
✔✔ It decreases
Why do aircraft need more runway on hot days?
✔✔ Air is less dense
Which type of cloud typically signals fair weather and looks puffy?
✔✔ Cumulus
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,What meteorological condition is often associated with clear air turbulence?
✔✔ Jet stream
What device measures atmospheric pressure in aviation?
✔✔ Barometer
Why are pilots concerned about dew point?
✔✔ It indicates potential for fog or cloud formation
What is the effect of icing on an aircraft wing?
✔✔ Decreases lift and increases drag
What is the standard temperature lapse rate in the troposphere?
✔✔ 2°C per 1000 feet
Which weather phenomenon forms when cold air moves under warm air?
✔✔ Cold front
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, Why are METARs important for pilots?
✔✔ Provide current weather conditions
What does a low-pressure system generally bring?
✔✔ Cloudy skies and precipitation
What time format is used in aviation weather reports?
✔✔ Zulu time
Why does visibility decrease in high humidity?
✔✔ Moisture scatters light
What instrument measures wind direction on an airport?
✔✔ Wind sock
What are contrails composed of?
✔✔ Ice crystals
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