Barometer
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Example:
Imagine you're trying to determine if it's going to rain by feeling the heaviness of the air around you. This is similar to how a barometer works, as it measures the weight or pressure of the air. Just as you might feel the air getting heavier before a storm, a barometer detects changes in air pressure to predict weather patterns, with the air's weight acting as a clue, much like the way your senses perceive the heaviness in the atmosphere.

Practice Version

Barometer: An instrument that measures air pressure. Barometer. A barometer is a tool used to measure atmospheric pressure, helping predict weather changes.