everyday science MCQ #5026

Why does the mercury column in the barometer fall rapidly before a severe storm?

everyday science MCQ #5026

  1. Question 1

    Q1. Why does the mercury column in the barometer fall rapidly before a severe storm?

    • A) It is due to a decrease in humidity in the air
    • B) It is due to the rise in atmospheric pressure
    • C) It is due to the fall in atmospheric pressure
    • D) It is due to the severe heat energy from the sun

    Answer: It is due to the fall in atmospheric pressure

    Explanation: Before a severe storm, rising warm moist air causes atmospheric pressure to drop, so the mercury level in a barometer falls rapidly as a warning sign of the approaching storm.