Exam quiz Meteorology - EASA Drone Quiz A2

Question 1

In meteorology, the term 'Advection' refers to:

Accepted Answer

The horizontal transport of air or atmospheric properties (like moisture or temperature) by the wind

Answer

The vertical movement of air due to heat

Answer

The freezing of water inside a cloud

Answer

The scattering of light by dust particles

Question 2

A remote pilot is conducting a mapping mission, moving from a high-pressure area to a low-pressure area. If they do not recalibrate the barometric sensor, what risk do they face regarding the displayed altitude?

Accepted Answer

The altimeter will display a value higher than the actual altitude, potentially leading the pilot to descend dangerously into ground obstacles

Answer

The altimeter will indicate a lower altitude than actual, leading the drone to fly too high into controlled airspace

Answer

The drone will lose its GPS signal due to the change in atmospheric density

Answer

The battery will drain faster because of the reduced pressure

Question 3

In meteorology and space weather planning, why is a high 'K-index' (Kp 5 or higher) a significant concern for the automated flight modes of a drone?

Accepted Answer

It signals a geomagnetic storm that can cause severe GPS positioning drift or sudden loss of satellite lock

Answer

It indicates a high probability of heavy snowfall

Answer

It means the air density is too high for efficient propeller rotation

Answer

It signifies that the wind speed at 120m is exactly 50 knots

Question 4

If an altimeter is set to 'QFE', what will it read when the aircraft is sitting on the runway?

Accepted Answer

Zero; QFE provides height above that specific airfield or ground level

Answer

The elevation of the airport above mean sea level

Answer

1013 feet

Answer

The density altitude

Question 5

In a METAR report, what does the code 'FU' stand for?

Accepted Answer

Smoke (from the French 'Fumée'), which can significantly reduce visibility

Answer

Freezing Updrafts

Answer

Funnel Cloud (Tornado)

Answer

Frequent Unstable winds

Question 6

Which of the following is a key characteristic of the Stratosphere?

Accepted Answer

It contains the ozone layer and temperature generally increases with altitude (temperature inversion)

Answer

It is where 99% of all weather happens

Answer

It is the lowest layer of the atmosphere

Answer

It has no oxygen at all

Question 7

If an air mass is pushed up a mountain and its temperature drops below its dew point, what happens?

Accepted Answer

The invisible water vapor condenses into visible water droplets, forming clouds and potentially precipitation (Orographic lifting)

Answer

The air mass instantly becomes a jet stream

Answer

The air becomes perfectly dry and clear

Answer

The air mass catches fire

Question 8

The Beaufort scale is used in meteorology to:

Accepted Answer

Estimate wind speed empirically based on visual observations of its effects on the sea or land (e.g., leaves rustling, branches moving)

Answer

Measure the intensity of an earthquake

Answer

Calculate the exact humidity in the air

Answer

Determine the altitude of the cloud base

Question 9

The passage of a fast-moving cold front is typically marked by which immediate weather changes?

Accepted Answer

A sharp drop in temperature, a sudden shift in wind direction, and a rapid drop followed by a sharp rise in atmospheric pressure

Answer

A gradual warming, clear skies, and a drop in pressure

Answer

No change in wind, but thick fog rolls in

Answer

A sudden increase in humidity without any rain

Question 10

In space weather monitoring, a Kp-index of 1 to 3 indicates:

Accepted Answer

Calm geomagnetic conditions; GPS/GNSS reception should be highly reliable

Answer

A severe solar storm; do not fly

Answer

Heavy rain is imminent

Answer

The drone's compass requires immediate calibration

Question 11

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 12

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 13

Which air mass is physically lighter (less dense) at the same temperature and pressure?

Accepted Answer

Humid air (because water vapor molecules weigh less than the nitrogen and oxygen molecules they replace)

Answer

Dry air

Answer

They have the exact same density

Answer

Cold air

Question 14

What is 'Relative Humidity'?

Accepted Answer

The ratio of the amount of water vapor actually in the air compared to the maximum amount the air could hold at that specific temperature

Answer

The exact weight of water in the air

Answer

The temperature at which water freezes

Answer

The pressure exerted by water droplets on the drone's frame

Question 15

Why is the 'anvil' (topmost part) of a cumulonimbus cloud dangerous, even if you are miles away from the storm's center?

Accepted Answer

Strong upper-level winds can carry severe hail out of the anvil, causing it to fall miles ahead of the main storm and potentially destroying a drone in clear air

Answer

It blocks the sun, making it too dark to fly

Answer

It creates a vacuum that pulls the drone upwards

Answer

It emits a high-frequency noise that disrupts the radio controller

Question 16

In a TAF or METAR, the code 'FM' stands for:

Accepted Answer

From; indicating a rapid and significant change in weather conditions occurring at a specific time

Answer

Frequent Moisture

Answer

Foggy Morning

Answer

Fast Movement

Question 17

What is a 'Rotor Cloud'?

Accepted Answer

A turbulent, rolling cloud found at the lower levels of a mountain wave system, indicating extreme, hazardous turbulence

Answer

A cloud created by the spinning rotors of a heavy drone

Answer

A harmless, flat cloud found over the ocean

Answer

A cloud formed strictly by industrial pollution

Question 18

According to the International Standard Atmosphere (ISA), what is the standard atmospheric pressure at mean sea level?

Accepted Answer

1013.25 hPa

Answer

1000.00 hPa

Answer

1025.13 hPa

Answer

995.50 hPa

Question 19

What is the danger of flying a drone in an area with a high 'Kp-index' (e.g., Kp 7 or 8)?

Accepted Answer

Severe geomagnetic storms can disrupt the ionosphere, causing significant GPS positioning errors, compass malfunctions, or total loss of satellite lock

Answer

The drone's battery will drain twice as fast

Answer

It means there is a high probability of a tornado

Answer

The remote controller will overheat

Question 20

What causes 'Steam Fog'?

Accepted Answer

Very cold, dry air moving over much warmer water, causing rapid evaporation and immediate condensation

Answer

Warm air moving over a cold snowpack

Answer

Pollution trapped in a city by an inversion layer

Answer

A sudden drop in barometric pressure

Question 21

In a METAR report, what does the abbreviation 'VCTS' stand for?

Accepted Answer

Thunderstorms in the Vicinity (within 8 to 16 km of the aerodrome reference point)

Answer

Very Clear and Tranquil Skies

Answer

Variable Cloud Thickness Status

Answer

Visibility Cleared To South

Question 22

How is wind direction typically reported in aviation weather forecasts (such as METAR or TAF)?

Accepted Answer

In degrees True (from True North), indicating the direction the wind is blowing FROM

Answer

In degrees Magnetic, indicating the direction the wind is blowing TOWARDS

Answer

Using only cardinal points (N, S, E, W)

Answer

As a percentage of the Earth's rotation

Question 23

How does a high density altitude (e.g., a hot, humid day at a high elevation) affect the aerodynamic performance of a multirotor drone?

Accepted Answer

It decreases performance because the air is less dense, meaning the propellers generate less thrust and the motors must work harder

Answer

It increases performance because the warm air provides more lift

Answer

It has no effect on battery-powered drones

Answer

It cools the battery faster, extending flight time

Question 24

If the space weather forecast shows a Kp-index of 6, what is the operational impact?

Accepted Answer

A moderate-to-strong geomagnetic storm is occurring, which can cause significant GPS positioning errors or complete loss of satellite lock

Answer

The air density will be too low to fly

Answer

The video transmission will fail entirely

Answer

The drone's battery will drain in half the normal time

Question 25

On a sunny afternoon, a pilot flying a drone from a dark asphalt parking lot over a cool lake should anticipate:

Accepted Answer

A strong thermal updraft over the asphalt, followed by sinking air (subsidence) over the cooler water, requiring throttle adjustments to maintain altitude

Answer

Perfectly smooth, uninterrupted flight at all times

Answer

A sudden loss of GPS signal over the water

Answer

The drone's compass reversing its polarity

Question 26

What does the 'Kp-index' measure in the context of drone operations?

Accepted Answer

The severity of geomagnetic storms caused by solar activity, which can disrupt GPS/GNSS signals

Answer

The kinetic power of the drone's motors

Answer

The likelihood of a thunderstorm forming

Answer

The density of fog in the area

Question 27

In a TAF forecast, what is the primary difference between the codes 'FM' (From) and 'BECMG' (Becoming)?

Accepted Answer

'FM' indicates a rapid and significant change at a specific time, while 'BECMG' indicates a gradual change over a period of about two hours

Answer

'FM' indicates a worsening of conditions, while 'BECMG' indicates an improvement

Answer

There is no difference; they are interchangeable terms

Answer

'BECMG' is used only for fog, while 'FM' is used only for wind

Question 28

How does a 'Squall' differ from a normal 'Wind Gust'?

Accepted Answer

A gust is a very brief spike in wind speed (seconds); a squall is a sudden, sharp increase in wind speed that lasts much longer (several minutes) and is usually associated with active storms

Answer

A squall is a decrease in wind speed

Answer

A squall only happens over the ocean

Answer

There is no difference

Question 29

What is the cloud coverage (in oktas) for an 'OVC' (Overcast) sky?

Accepted Answer

8 oktas (the sky is completely covered)

Answer

1 to 2 oktas

Answer

3 to 4 oktas

Answer

5 to 7 oktas

Question 30

Flying a drone low over a densely packed city on a windy day is risky primarily due to:

Accepted Answer

Severe mechanical turbulence and funneling effects caused by the buildings disrupting the wind flow

Answer

The heat from the buildings melting the battery

Answer

Magnetic interference from streetlights

Answer

A total lack of wind between the buildings

Exam simulation Meteorology - EASA Drone Quiz A2

Exam simulation EASA Drone A2 Quiz Meteorology 30 questions on 30 minutes