What is the term used to describe the amount of water vapor mixed with dry air?

• A. Pressure
• B. Density
• C. Humidity
• D. Temperature

Answer: (C)

The term used to describe the amount of water vapor mixed with dry air is "humidity." Humidity quantifies the concentration of water vapor present in the air in relation to the total volume of the air. It is essential for understanding weather patterns and atmospheric conditions, as it influences temperature, precipitation, and overall climate.

In contrast, pressure refers to the force exerted by air molecules in an area, density relates to the mass of air per unit volume, and temperature measures the thermal energy within the air. While all these factors are related to air properties and can impact humidity levels, none define the specific mixture of water vapor and dry air the way humidity does.