Exam quiz Meteorology - EASA Drone Quiz A2

Question 1

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 2

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 3

What is the primary cause of 'Mechanical Turbulence'?

Accepted Answer

Wind flowing over irregular terrain, buildings, or trees, causing the air to break into complex eddies and swirls

Answer

The drone's motors spinning out of sync

Answer

The sun heating the ground unevenly

Answer

Two air masses of different temperatures colliding

Question 4

How does flying a multirotor at a high 'Density Altitude' affect the battery's endurance?

Accepted Answer

The thinner air forces the motors to spin faster to generate the same lift, which draws more current and decreases battery endurance

Answer

It greatly increases the endurance

Answer

It has no effect on the battery

Answer

It causes the battery to freeze

Question 5

If you are flying near the wake of a large commercial aircraft, how do the wingtip vortices (wake turbulence) generally move?

Accepted Answer

They sink downward and drift outward with the wind, posing a severe danger to drones flying below and behind the large aircraft's flight path

Answer

They shoot straight up into the sky

Answer

They travel directly forward, ahead of the airplane

Answer

They immediately dissipate within 2 seconds

Question 6

In space weather, what does the 'G-scale' (G1 to G5) measure?

Accepted Answer

The severity of Geomagnetic Storms, with G5 being extreme and highly disruptive to satellite navigation (GNSS/GPS)

Answer

Gravity anomalies

Answer

Gust intensity

Answer

Ground visibility

Question 7

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 8

How does 'Frontal Fog' typically form?

Accepted Answer

When warm rain falls through a layer of colder air near the ground, evaporating and raising the humidity of the cold air to saturation

Answer

By the sudden cooling of the ground on a clear night

Answer

By wind blowing humid air up a mountain slope

Answer

By industrial pollution mixing with snow

Question 9

In which atmospheric layer is the protective ozone layer primarily located?

Accepted Answer

Stratosphere

Answer

Troposphere

Answer

Mesosphere

Answer

Exosphere

Question 10

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 11

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 12

How does a low-level temperature inversion affect local weather and visibility near the ground?

Accepted Answer

It acts like a lid, trapping dust, smoke, smog, and moisture near the surface, often leading to very poor visibility and hazy conditions

Answer

It creates violent thunderstorms

Answer

It clears the air instantly, providing perfect visibility

Answer

It causes the wind to double in speed

Question 13

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 14

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 15

In an aviation weather forecast (TAF), what does the abbreviation 'TEMPO' indicate?

Accepted Answer

Temporary fluctuations in the forecasted weather, lasting for less than one hour at a time

Answer

A permanent and complete change in the weather conditions

Answer

A gradual change occurring over several hours

Answer

The exact temperature at the airport

Question 16

What meteorological hazard is strongly indicated by the presence of lenticular (lens-shaped) clouds over or downwind of a mountain range?

Accepted Answer

Mountain waves, characterized by severe clear-air turbulence and strong up/downdrafts

Answer

A severe blizzard

Answer

A totally calm inversion layer

Answer

An impending drought

Question 17

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, evaporating 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 18

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 19

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

Accepted Answer

Snow

Answer

Sandstorm

Answer

Squall line

Answer

Smoke

Question 20

Which of the following is classified as a 'Low Cloud' (base typically below 6,500 ft)?

Accepted Answer

Stratus

Answer

Cirrostratus

Answer

Altocumulus

Answer

Cirrus

Question 21

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 22

In standard aviation weather reports, wind speed is primarily expressed in:

Accepted Answer

Knots (KT), where 1 knot equals 1 nautical mile per hour

Answer

Kilometers per hour (km/h)

Answer

Miles per hour (mph)

Answer

Meters per second (m/s) only

Question 23

An 'Absolutely Stable' atmosphere is characterized by:

Accepted Answer

A temperature lapse rate that is less than the moist adiabatic lapse rate, meaning any displaced air parcel will tend to return to its original position (resists upward motion)

Answer

Continuous, severe thunderstorms

Answer

Winds exceeding 50 knots

Answer

A complete absence of clouds forever

Question 24

Where on Earth is the 'Coriolis Effect' (which deflects moving air) at its strongest?

Accepted Answer

At the North and South Poles

Answer

At the Equator

Answer

At 45 degrees latitude

Answer

Over the Pacific Ocean exclusively

Question 25

If you are flying a multirotor and experience a sudden, strong updraft from a thermal, what is the expected initial reaction of the drone?

Accepted Answer

The drone will rapidly gain altitude; the flight controller will then reduce motor RPM to compensate and bring it back down to its target altitude

Answer

The drone will pitch forward

Answer

The drone will suddenly drop towards the ground

Answer

The drone will turn off completely

Question 26

The 'Dew Point' is defined as:

Accepted Answer

The temperature to which air must be cooled (at constant pressure) for it to become 100% saturated with water vapor, leading to condensation

Answer

The time of day when dew evaporates

Answer

The altitude where clouds freeze

Answer

The speed at which rain falls

Question 27

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 28

In a TAF forecast, what does 'PROB40' indicate?

Accepted Answer

There is a 40% probability of the forecasted weather conditions occurring

Answer

Visibility will be 40 miles

Answer

The temperature will reach 40 °C

Answer

Wind will blow exactly at 40 knots

Question 29

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 30

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

Exam simulation Meteorology EASA Drone Quiz A2

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