Weather

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Warm air ________ and cold air _____ because warm air is ______ dense.

The force that air exerts on all objects or the weight of a column of air is

Instrument used to measure air pressure

When it is high pressure, expect it to be

Instrument used to measure the amount of rain

Instrument used to measure wind speed

The average year to year conditions of temperature, wind, humidity, and pressure in an area is

When relative humidity is 100%, it