Why does barometer predict weather?
Show answer & explanation
Answer: Low pressure brings storms
Measures temperature changes — Wrong. Barometer measures atmospheric pressure, not temperature. Pressure changes indicate approaching weather systems—low pressure = storms.
Low pressure brings storms ✓ — Correct! Rising pressure means a high-pressure system is coming (clear weather). Falling pressure means low pressure approaching (clouds, rain, storms). A rapid drop warns of severe weather. In low-pressure areas, air rises and cools, causing condensation and rain. In high pressure, air sinks and warms, clearing skies. Sailors have long used barometers—'glass falling' means storms ahead!
Barometer detects wind speed — Wrong. Barometer measures air pressure, not wind speed (anemometer does that). Pressure changes indicate weather systems—low pressure = storms approaching.
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