Explain why a barometer, when kept inside a house, might still show slight fluctuations in reading even if the house is sealed from direct wind.

8 views 2 helpful Updated Jul 27, 2026
Appears in Class 8th
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Answer

Even if a house is sealed from direct wind, the atmospheric pressure outside the house is constantly changing due to various weather phenomena (e.g., movement of high and low pressure systems, temperature changes). Since air can slowly seep in and out of a sealed house, or transfer pressure through its structure, the internal pressure will eventually equalize with the external pressure, causing the barometer inside to reflect these external fluctuations.

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