🔍 Key Concepts

• Relationship between air temperature and humidity • How warm air and cold air differ in their capacity to hold water vapor • Basic idea of relative humidity and saturation

💭 Think About

• If you heat a parcel of air without adding water, what happens to its ability to hold water vapor before it becomes saturated? • Think about very hot tropical areas vs. very cold polar regions: which tends to have higher humidity and more heavy rain, and why? • What happens to moisture in the air when warm, moist air cools down rapidly (for example, at night or when it hits a cold surface)?

✅ Before You Answer

• Compare how capacity to hold moisture changes with temperature (not the actual amount present, but the maximum possible). • Decide whether moisture in air is temperature-dependent or independent. • Eliminate any option that contradicts what you know about dew, fog, or condensation forming when air cools.