Drone U Weather pp 6-10

What is density altitude?

• The pressure altitude corrected for non-standard temperature.

• The theoretical pressure altitude in non-standard atmosphere.

• The vertical distance above sea level in the standard atmosphere.

• The amount of air pressure at a given altitude.

What happens to aircraft performance as density altitude increases?

• Aircraft performance decreases.

• Aircraft performance increases.

• Aircraft performance remains unchanged.

• Aircraft performance fluctuates unpredictably.

What is the effect of less dense air on aircraft performance?

• It increases thrust because the engine takes in more air.

• It decreases lift because the thin air exerts less force on the airfoils.

• It increases lift because the air exerts more force on the airfoils.

• It has no significant effect on aircraft performance.

Which of the following is NOT a kind of atmospheric motion?

• Convective currents

• Wind

• Coriolis force

• Thrust

How do currents and winds affect aircraft operations?

• They have no significant impact on aircraft operations.

• They only affect the aircraft during cruise flight operations.

• They affect takeoff, landing, and cruise flight operations.

• They only change the weather patterns without affecting aircraft operations.

In the Northern Hemisphere, how is the flow of air from high to low pressure areas deflected?

• To the left, creating a counterclockwise circulation

• To the right, creating a clockwise circulation

• Straight, creating no specific circulation

• To the right, creating a counterclockwise circulation

What type of circulation is created around an area of high pressure in the Northern Hemisphere?

• Clockwise or anticyclonic circulation

• Counterclockwise or cyclonic circulation

• Straight or non-circulatory movement

• Variable circulation with no set pattern

What is the circulation pattern around low-pressure areas in the Northern Hemisphere?

• Clockwise and towards the low pressure

• Counterclockwise and away from the low pressure

• Counterclockwise and towards the low pressure

• Clockwise and away from the low pressure

What can change the wind direction and speed close to the Earth's surface?

• The rotation of the Earth

• Local conditions, geological features, and other anomalies

• The position of the moon

• The atmospheric pressure at high altitudes

What is the result of uneven heating of the air that creates small areas of local circulation called convective currents?

• Plowed ground, rocks, sand, and barren land absorbing solar energy quickly

• Water, trees, and other areas of vegetation absorbing heat slowly

• Both A and B

• The Earth's rotation