Exam quiz Meteorology - EASA Drone License A2

Question 1

How does the Coriolis effect behave at the Earth's equator?

Accepted Answer

It is effectively zero, meaning winds do not get deflected by planetary rotation at the equator

Answer

It is at its absolute maximum strength

Answer

It pulls air directly into space

Answer

It causes water to drain counter-clockwise in sinks

Question 2

When looking at a weather chart, what does the presence of isobars spaced very closely together in a specific region indicate?

Accepted Answer

A strong pressure gradient, which results in high-intensity winds

Answer

An area of dead calm with a total absence of wind

Answer

An area with constant temperatures and high visibility

Answer

The imminent end of a cyclonic disturbance

Question 3

Above the friction layer, the 'geostrophic wind' flows:

Accepted Answer

Parallel to the isobars, balancing the pressure gradient force and the Coriolis force

Answer

Perpendicular to the isobars

Answer

Straight up into the stratosphere

Answer

In a perfect circle around the equator

Question 4

What is the primary danger of a microburst to a UAS during flight?

Accepted Answer

It creates a massive, localized downdraft followed by violent horizontal wind shear that can easily overpower the drone's propulsion and force it into the ground

Answer

It causes the drone's battery to freeze

Answer

It permanently magnetizes the drone's compass

Answer

It generates a thermal updraft that pushes the drone above the 120 m limit

Question 5

On a synoptic weather chart, what do closely spaced isobars indicate?

Accepted Answer

A strong pressure gradient, which results in high wind speeds

Answer

A weak pressure gradient, resulting in calm winds

Answer

An area of heavy snowfall

Answer

A region completely free of turbulence

Question 6

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 7

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 8

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

Accepted Answer

Haze (fine dust or salt particles suspended in the air, reducing visibility)

Answer

Hail Zone

Answer

Heavy Zonal winds

Answer

Hurricane Zone

Question 9

How is 'Upslope Fog' formed?

Accepted Answer

When moist, stable air is forced up a sloping landmass (like a mountain) by the wind, cooling adiabatically until it reaches its dew point

Answer

By the sun heating a wet runway

Answer

By thunderstorms evapourating before hitting the ground

Answer

By high winds at altitudes above 20,000 ft

Question 10

In a METAR, visibility is reported as 0800. How will the obscuration be coded?

Accepted Answer

FG (Fog), because the visibility is less than 1,000 metres

Answer

BR (Mist)

Answer

HZ (Haze)

Answer

RA (Rain)

Question 11

What atmospheric mechanism typically causes a 'sea breeze' during the daytime?

Accepted Answer

The land heating up faster than the sea, causing air to rise over land and drawing cooler air in from over the water

Answer

The ocean cooling down faster than the land

Answer

The gravitational pull of the moon on the ocean

Answer

High pressure systems stalling over mountain ranges

Question 12

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 13

Wake turbulence (wingtip vortices) generated by a manned aircraft is generally most severe when the aircraft is:

Accepted Answer

Heavy, clean (flaps up), and flying slowly

Answer

Light, flying fast, and close to the ground

Answer

Parked on the runway with engines idling

Answer

Flying in a steep dive

Question 14

For standard aviation weather reporting (METAR), at what height above the ground is wind speed and direction officially measured by an anemometer?

Accepted Answer

10 metres (approx. 33 feet)

Answer

1 metre

Answer

50 metres

Answer

100 metres

Question 15

Which meteorological tool uses radio waves to determine the location, intensity, and movement of precipitation?

Accepted Answer

Weather Radar

Answer

Anemometer

Answer

Barometer

Answer

Hygrometer

Question 16

What is 'Altimeter Setting'?

Accepted Answer

The value to which the barometric altimeter is calibrated to indicate a specific altitude (e.g., QNH for altitude above sea level)

Answer

The color of the altimeter dial

Answer

The GPS coordinates of the drone

Answer

The physical placement of the sensor inside the drone

Question 17

In the METAR 'LIRF 151250Z 32015KT 9999 FEW030 18/10 Q1012', what does '9999' mean?

Accepted Answer

Visibility is 10 kilometers or more

Answer

The wind is blowing at 9,999 knots

Answer

The altimeter setting is 999.9 hPa

Answer

The cloud base is at 99,990 feet

Question 18

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 19

What is the 'Lapse Rate'?

Accepted Answer

The rate at which atmospheric temperature decreases with an increase in altitude

Answer

The rate at which the drone's battery depletes

Answer

The speed of the wind at 10,000 feet

Answer

The time it takes for fog to clear

Question 20

In the Northern Hemisphere, how does the wind flow around a low-pressure system at the surface?

Accepted Answer

Counter-clockwise and spiraling inward

Answer

Clockwise and spiraling outward

Answer

Directly downwards into the centre

Answer

It remains perfectly calm

Question 21

What defines an 'Occluded Front'?

Accepted Answer

A complex weather front formed when a fast-moving cold front overtakes a slower-moving warm front, lifting the warm air mass entirely off the ground

Answer

A front that has stopped moving entirely

Answer

A warm front moving over a cold ocean

Answer

A front that produces no clouds

Question 22

A 'katabatic wind' is best described as:

Accepted Answer

A dense, cold wind flowing down a mountain slope or glacier into a valley, typically at night

Answer

A warm wind blowing up a mountain slope during the day

Answer

A horizontal wind caused by the Coriolis effect

Answer

A sudden updraft inside a thunderstorm

Question 23

Why is a Katabatic wind often much stronger than an Anabatic wind?

Accepted Answer

Because katabatic winds (cold, dense air draining downslope) are assisted by gravity, making them accelerate and often become quite strong

Answer

Because the sun is hotter in the afternoon

Answer

Because they only happen near the equator

Answer

Because they are driven by the Coriolis effect

Question 24

Which cloud prefix indicates a 'Middle Cloud' (base typically between 6,500 and 20,000 ft)?

Accepted Answer

Alto- (e.g., Altostratus, Altocumulus)

Answer

Cirro-

Answer

Nimbo-

Answer

Strato-

Question 25

In aviation weather reports, how is a 'Ceiling' defined?

Accepted Answer

The height above the Earth's surface of the lowest layer of clouds reported as 'Broken' (BKN) or 'Overcast' (OVC)

Answer

The maximum altitude a drone can physically reach

Answer

Any cloud layer reported as 'Scattered' (SCT)

Answer

The top of a thunderstorm cloud

Question 26

What is an 'anabatic wind'?

Accepted Answer

A warm wind blowing upwards along a sun-heated mountain slope during the day

Answer

A cold wind blowing down a mountain at night

Answer

A wind that blows strictly over the ocean

Answer

A violent crosswind on a runway

Question 27

How does surface friction affect the wind near the ground compared to the 'geostrophic wind' at higher altitudes?

Accepted Answer

It slows the wind down and causes it to blow slightly across the isobars toward areas of lower pressure

Answer

It speeds the wind up and makes it blow parallel to the isobars

Answer

It has no effect on wind direction or speed

Answer

It forces the wind to blow strictly vertically

Question 28

How does 'Precipitation-Induced Fog' (or Frontal Fog) typically form?

Accepted Answer

When relatively warm rain falls through a cooler layer of air near the ground, evapourating and saturating the cool air until fog forms

Answer

By the rapid freezing of a lake

Answer

By high winds stirring up dust

Answer

By pollution trapped in a city

Question 29

In a METAR report, what does the weather code 'FZRA' indicate?

Accepted Answer

Freezing Rain, representing a severe icing hazard as supercooled water freezes upon impact with the drone

Answer

Fog and Rain

Answer

Frequent Rain

Answer

Frozen Runways

Question 30

What instrument is used to measure Relative Humidity?

Accepted Answer

Hygrometer

Answer

Anemometer

Answer

Altimeter

Answer

Tachometer

Exam simulation Meteorology - EASA Drone License A2

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

Exam simulation Meteorology - EASA Drone License A2

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

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