Specific Weather Part 1

What is the standard sea level pressure in inches of Mercury (Hg)?

• 30.00 Hg

• 29.92 Hg

• 1,013.2 mb

• 15 degrees Celsius

How does rising atmospheric pressure generally indicate the weather?

• Fair weather is approaching

• Bad weather is approaching

• It has no correlation with weather

• It indicates thunderstorms

What effect does humidity have on air density?

• Increases air density

• Decreases air density

• No effect on air density

• Depends on the temperature

What is density altitude?

• Altitude above sea level

• Altitude corrected for nonstandard temperature variations

• Altitude measured in millibars

• Altitude during low-level wind shear

Why is frost a flight safety hazard for unmanned aircraft?

• It increases lift production

• It disrupts the flow of air over wings or rotors

• It reduces drag

• It has no effect on flight performance

What is the purpose of METARs and TAFs in aviation?

• Provide information on temperature inversions

• Indicate thunderstorm development

• Report current ceiling and visibility

• Measure air density

When humidity increases, air density...

• Decreases

• Increases

• Remains the same

Density altitude is what the aircraft...

• "Feels" like it's flying at

• The exact altitude that the aircraft is flying

• The density measurement at sea level

• At normal operating temperatures, it is 1,000 feet