Meteorology - EASA Drone Quiz A2

Question 1

In a high-pressure system (Anticyclone), the air is generally experiencing 'Subsidence'. What does this mean for the weather?

Accepted Answer

The air is slowly sinking and warming, which inhibits cloud formation and generally leads to clear, stable weather

Answer

The air is rising rapidly, creating severe thunderstorms

Answer

The air is moving horizontally at hurricane speeds

Answer

The air is freezing, causing immediate hail

Question 2

If a strong wind blows perpendicular to a mountain ridge, what dangerous meteorological phenomenon can form on the leeward (downwind) side?

Accepted Answer

Mountain waves and rotor clouds, which contain severe turbulence and strong downdrafts

Answer

Radiation fog

Answer

A sudden drop in atmospheric pressure to a vacuum

Answer

Sea breezes

Question 3

The sequence of clouds typically observed ahead of an approaching warm front is:

Accepted Answer

Cirrus, thickening to Cirrostratus, then Altostratus, and finally Nimbostratus bringing steady rain

Answer

Cumulus, followed by Cumulonimbus

Answer

Fog, followed by clear skies

Answer

Stratus clouds immediately followed by a tornado

Question 4

What is the primary characteristic of an 'Unstable' atmosphere?

Accepted Answer

Air parcels forced upwards continue to rise because they remain warmer than the surrounding air, leading to vertical cloud development (cumulus) and turbulence

Answer

Thick fog lasting all day

Answer

Continuous, smooth wind from one direction

Answer

No clouds ever form

Question 5

What is a 'Thermal Inversion'?

Accepted Answer

A weather condition where a layer of warm air sits over a layer of cooler air near the ground, trapping pollutants and causing hazy, low-visibility conditions

Answer

A situation where the drone flips upside down

Answer

A sudden drop in temperature during a hot day

Answer

The reversal of the Earth's magnetic poles

Question 6

In aviation, how is 'Visibility' officially defined?

Accepted Answer

The greatest horizontal distance at which prominent unlit objects can be seen and identified by day, and prominent lit objects by night

Answer

The distance a laser can travel before scattering

Answer

The depth a pilot can see into the water from the air

Answer

The vertical distance from the ground to the cloud base

Question 7

What happens if you fly from an area of high atmospheric pressure into an area of low pressure without updating your barometric altimeter?

Accepted Answer

The altimeter will read higher than your true altitude, meaning the drone is physically lower to the ground than the pilot thinks (High to Low, look out below)

Answer

The altimeter will read lower than your true altitude

Answer

The drone's motors will automatically shut down

Answer

The drone will experience a sudden loss of radio signal

Question 8

Why is 'Virga' considered a visual warning sign for pilots?

Accepted Answer

It indicates precipitation that is evaporating before it hits the ground, which cools the air rapidly and can create sudden, violent downdrafts (microbursts)

Answer

It means the drone's camera lens is dirty

Answer

It shows that the airspace is currently closed

Answer

It means a solar flare is currently disrupting GPS

Question 9

What is 'Wake Turbulence'?

Accepted Answer

Severe aerodynamic disturbances, primarily wingtip vortices, left behind a heavier aircraft in flight, posing a massive hazard to light drones

Answer

Turbulence caused by water evaporating from a lake

Answer

Turbulence generated by solar radiation on black asphalt

Answer

The vibration felt when a drone lands hard

Question 10

In an aviation weather report, what does the cloud coverage term 'FEW' indicate?

Accepted Answer

1 to 2 oktas (eighths) of the sky is covered by clouds

Answer

3 to 4 oktas of the sky is covered

Answer

5 to 7 oktas of the sky is covered

Answer

The sky is completely clear

Exam questions Meteorology - EASA Drone Quiz A2

EASA Drone Quiz A2: Meteorology 10 Questions no time limit