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3 cards from this section. Quick, good the night before a test.
What device measures air pressure?
It starts with 'b' and is essential in meteorology.
What is the liquid used in a mercury barometer?
It is a heavy metal that is liquid at room temperature.
What is the main function of a barometer?
Think about what the word 'baro' refers to.
True or False: The height of mercury in a mercury barometer decreases when atmospheric pressure increases.
Consider how pressure influences height.
If the mercury column in a barometer is at 800 mm instead of 760 mm, calculate the new air pressure. Given that the density of mercury is 13600 kg/m³ and g = 9.8 m/s².
Use the same formula as before but adjust the height accordingly.
Discuss how an aneroid barometer would react in a rapidly changing weather condition approaching a storm. What would you expect the needle/dial to indicate?
Think about pressure changes related to weather systems.
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