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Free Practice Questions for CPL Meteorology

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Sample CPL Meteorology Practice Questions

Try these sample questions to review concepts for the CPL Meteorology exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which gas forms the largest percentage by volume of the Earth's dry atmosphere?
A.Oxygen
B.Nitrogen
C.Argon
D.Carbon dioxide
Explanation: Dry air is about 78% nitrogen by volume, ~21% oxygen, ~0.9% argon, and ~0.04% carbon dioxide. Nitrogen therefore dominates atmospheric composition.
2Almost all weather phenomena (clouds, precipitation, and most turbulence) occur in which atmospheric layer?
A.Stratosphere
B.Mesosphere
C.Troposphere
D.Thermosphere
Explanation: The troposphere contains nearly all water vapour and the large majority of atmospheric mass near the surface, so virtually all conventional weather develops there.
3ICAO Standard Atmosphere (ISA) mean sea level temperature and pressure are:
A.15°C and 1013.25 hPa
B.0°C and 1013.25 hPa
C.15°C and 1000 hPa
D.20°C and 29.92 inHg
Explanation: ISA defines MSL temperature as 15°C (288.15 K) and pressure as 1013.25 hPa (29.92 inHg). These are the reference values for altimetry and performance.
4In the ISA troposphere, temperature decreases with height at approximately:
A.1°C per 1,000 ft
B.2°C per 1,000 ft
C.3°C per 1,000 ft
D.5°C per 1,000 ft
Explanation: The ICAO environmental (temperature) lapse rate in the troposphere is about 1.98°C/1,000 ft, commonly rounded to 2°C/1,000 ft, until the tropopause.
5Approximate ISA tropopause height in mid-latitudes is:
A.18,000 ft
B.25,000 ft
C.36,090 ft
D.50,000 ft
Explanation: In the ICAO Standard Atmosphere the tropopause is near 11 km / about 36,090 ft, above which temperature is taken as constant in the lower stratosphere model.
6Atmospheric pressure always:
A.Increases with height
B.Decreases with height
C.Remains constant above 10,000 ft
D.Equals density at all levels
Explanation: Hydrostatic balance means pressure falls with altitude as the weight of the overlying air column decreases.
7For a given pressure altitude, denser air is associated with:
A.Higher temperature and higher humidity
B.Lower temperature and lower humidity
C.Higher temperature only
D.Higher humidity only
Explanation: Density rises when temperature falls (molecules pack closer) and when humidity falls (dry air is denser than moist air at the same pressure/temperature).
8Relative humidity is the ratio of:
A.Actual water vapour content to the maximum possible at that temperature
B.Dew point to freezing point
C.Cloud water to rain water
D.Absolute humidity to air density only
Explanation: Relative humidity compares actual vapour content (or vapour pressure) with the saturation value at the same temperature, expressed as a percentage.
9The dew point temperature is:
A.Always equal to the OAT
B.The temperature to which air must be cooled at constant pressure to reach saturation
C.Always 0°C
D.The temperature at which ice always forms on the airframe
Explanation: Dew point is the temperature at which saturation occurs if air is cooled isobarically without changing moisture content. When OAT equals dew point, RH is 100%.
10QNH is the altimeter subscale setting that causes the altimeter to read:
A.Height above the aerodrome elevation when on the ground
B.Pressure altitude
C.Altitude above mean sea level (approximately elevation on the ground)
D.Flight level
Explanation: QNH is mean sea level pressure reduced for the station so that, with QNH set, the altimeter indicates approximate altitude AMSL (aerodrome elevation when on the ground).

About the CPL Meteorology Exam

The Civil Aviation Authority of Sri Lanka (CAASL) Commercial Pilot License (CPL) Meteorology examination assesses a pilot's understanding of aviation meteorology at commercial level. Grounded in ICAO/EASA-aligned Part-FCL knowledge requirements as applied by CAASL, the paper emphasizes tropical weather systems affecting Sri Lanka and the Indian Ocean — including the Southwest and Northeast monsoons, ITCZ dynamics, and local wind regimes — alongside standard mid-latitude topics such as fronts, depressions, altimetry, and flight hazards. Per SLCAP 3080 and published Examination Center subject tables, Meteorology for CPL(A) / CPL-IR streams is timed at 1 hour 30 minutes with approximately 63 multiple-choice questions. All pilot knowledge questions are multiple-choice; the pass mark is 75% with no negative marking. The exam is administered as CBT at the CAASL examination center in Katunayake. Examination fees are published in SLCAP 7100 (CAASL fees schedule). Preparation should focus on ISA thermodynamics, QNH/QFE/QNE altimetry, lapse rates and stability, METAR/TAF/SIGMET decoding, SIGWX charts, and hazard recognition (thunderstorms, icing, windshear, fog). Practice with calculation items (ISA deviation, cloud base, density altitude concepts) builds the speed needed for the timed paper.

Exam sponsor: Civil Aviation Authority of Sri Lanka (CAASL) Examination Center. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

63 questions

Time Limit

1 hour 30 minutes

Passing Score

75%

Exam / Certification Fees

See SLCAP 7100 (CAASL fees schedule)

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

30%

Tropical Meteorology & Monsoon Systems

The Southwest and Northeast monsoons, intertropical convergence zone (ITCZ) dynamics, tropical cyclones, and local wind profiles unique to the Indian Ocean and Sri Lanka.

25%

Atmospheric Thermodynamics & Stability

Standard atmosphere (ISA) properties, dry and saturated adiabatic lapse rates, temperature inversions, atmospheric stability and instability, and cloud base calculations.

25%

Meteorological Hazard Avoidance

Aircraft icing types and severity, low-level wind shear, microburst mechanics, thunderstorm stages, clear air turbulence (CAT), and volcanic ash hazards.

20%

Weather Reports, Forecasts & Synoptic Charts

Decoding and interpreting METAR, TAF, SIGMET, significant weather (SIGWX) charts, and upper wind and temperature charts.

Preparing for the CPL Meteorology Exam

What You Need to Know

  • Passing score: 75%
  • Exam length: 63 questions
  • Time limit: 1 hour 30 minutes
  • Exam / certification fees: See SLCAP 7100 (CAASL fees schedule) Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

CPL Meteorology: Suggested Study Strategy

1Memorize ISA sea-level values: 15°C, 1013.25 hPa, density about 1.225 kg/m³, and a tropospheric lapse rate of about 2°C per 1,000 ft up to roughly 36,090 ft.
2Practice cloud-base estimates using (Temperature − Dew Point) × 400 ≈ cloud base in feet AGL (rule of thumb).
3Know DALR (~3°C/1,000 ft) versus SALR (~1.5–1.8°C/1,000 ft) and how latent heat release reduces the saturated rate.
4Master Sri Lanka monsoon seasons: Southwest (roughly May–September, wet southwest slopes) and Northeast (roughly December–February, Bay of Bengal moisture on north/east).
5Learn thunderstorm stages: cumulus (updrafts), mature (updrafts + downdrafts, rain, shear), dissipating (downdrafts dominate).
6Study microburst windshear: performance increase into the headwind, then downdraft and severe tailwind on exit.
7Decode METAR/TAF daily — especially TSRA, BR, FG, HZ, FU, GR, CAVOK, and runway windshear remarks.

Frequently Asked Questions

What is the format of the CAASL CPL Meteorology exam?

It is a computer-based multiple-choice paper. Per SLCAP 3080 / Examination Center tables, Meteorology is typically 63 questions in 1 hour 30 minutes. There is no negative marking, and the passing score is 75%.

Where is the examination conducted?

The CAASL conducts theoretical examinations at its official examination center located in Katunayake (near Bandaranaike International Airport).

What local weather features are emphasized in the exam?

The exam features heavy emphasis on Sri Lanka's monsoonal cycles: the Southwest Monsoon (May to September) and the Northeast Monsoon (December to February), including the inter-monsoonal periods, ITCZ movement, and typical hazards associated with these seasons.

How much does the CPL Meteorology paper cost?

Examination fees are published in SLCAP 7100 (CAASL fees schedule). Do not rely on unofficial third-party fee quotes; check the current SLCAP 7100 schedule before booking.

Are calculators or flight computers allowed in the examination room?

Yes, candidates are typically permitted to use non-programmable calculators and standard mechanical flight computers (such as a CRP-1 or CRP-5) for wind, speed, and altimetry problems, subject to CAASL examination-center rules on the day.