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Difficulty: MediumWeather Elements, Instruments, and Measurements

A weather observer at a meteorological station needs to organize daily readings and equipment records. Match each weather element listed in Column I with its corresponding measuring instrument and standard unit of measurement in Column II. Which pairings correctly align every weather element with its designated instrument?

  • Atmospheric PressureAneroid Barometer (Millibars)
  • Wind SpeedCup Anemometer (Knots)
  • Sunshine DurationCampbell-Stokes Recorder (Hours)
  • Relative HumidityHygrometer (Percentage)

Answer

Atmospheric Pressure matches with Aneroid Barometer (Millibars); Wind Speed matches with Cup Anemometer (Knots); Sunshine Duration matches with Campbell-Stokes Recorder (Hours); Relative Humidity matches with Hygrometer (Percentage).
Each weather element is correctly paired with its dedicated meteorological instrument and standard unit: Atmospheric Pressure is measured with an Aneroid Barometer (Millibars), Wind Speed with a Cup Anemometer (Knots), Sunshine Duration with a Campbell-Stokes Recorder (Hours), and Relative Humidity with a Hygrometer (Percentage).

Step-by-Step Solution

1
Identify the instrument and unit for Atmospheric Pressure
Atmospheric Pressure pairs with Aneroid Barometer (Millibars).
Air pressure is measured with barometers in millibars or hectopascals.
2
Identify the instrument and unit for Wind Speed
Wind Speed pairs with Cup Anemometer (Knots).
The rotation rate of anemometer cups measures wind velocity in knots or m/s.
3
Identify the instrument and unit for Sunshine Duration
Sunshine Duration pairs with Campbell-Stokes Recorder (Hours).
A glass sphere focuses rays onto a sensitized card to record sunshine duration in hours per day.
4
Identify the instrument and unit for Relative Humidity
Relative Humidity pairs with Hygrometer (Percentage).
Moisture relative to saturation level is measured using hygrometers or psychrometers as a percentage.

Key Concept

Weather Elements, Instruments, and Standard Units
Estimated Time:1m 30s
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Topics

Weather Elements, Instruments, and Measurements

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