Examkin

Question

Difficulty: MediumWeather Elements, Instruments, and Measurements

A meteorological officer at a weather station needs to select the appropriate instruments and standard units of measurement for recording atmospheric pressure and relative humidity. Which pair of instruments and corresponding units should be selected?

  1. Atmospheric pressure: Barometer (measured in millibars); Relative humidity: Hygrometer (measured in percentage)Answer
  2. B
    Atmospheric pressure: Anemometer (measured in knots); Relative humidity: Barometer (measured in millibars)
  3. C
    Atmospheric pressure: Hygrometer (measured in percentage); Relative humidity: Wind vane (measured in cardinal points)
  4. D
    Atmospheric pressure: Thermometer (measured in degrees Celsius); Relative humidity: Anemometer (measured in meters per second)

Answer

Atmospheric pressure is measured using a barometer in millibars (mb), and relative humidity is measured using a hygrometer in percentage (%).
Atmospheric pressure is the weight of the air column above a given point, measured using a barometer in units of millibars (mb) or hectopascals (hPa). Relative humidity is the ratio of actual water vapor in the air to the maximum amount possible at the current temperature, measured as a percentage (%) using a hygrometer or psychrometer.

Step-by-Step Solution

1
Identify the instrument and unit used for recording atmospheric pressure.
Atmospheric pressure is measured using a barometer, with readings typically expressed in millibars (mb) or hectopascals (hPa).
Atmospheric pressure represents the force exerted by the weight of air per unit surface area.
2
Identify the instrument and unit used for recording relative humidity.
Relative humidity is measured using a hygrometer (such as a dry-and-wet bulb psychrometer), expressed as a percentage (%).
Relative humidity measures the amount of moisture present in the air compared to the maximum amount the air can hold at that specific temperature.
3
Select the option that correctly pairs both weather elements with their respective instruments and units.
The option pairing atmospheric pressure with the barometer (millibars) and relative humidity with the hygrometer (percentage) is correct.
Each weather element is correctly aligned with its standard measuring device and unit.

Key Concept

Weather Elements, Measuring Instruments, and Units
Estimated Time:1m 0s
Rate this question

Topics

Weather Elements, Instruments, and Measurements

More questions from this topic